{
  "dataset": "Pakistan Stratigraphy Explorer — Kohistan-Ladakh Magmatic Arc",
  "basin": "Kohistan-Ladakh Magmatic Arc",
  "provinces": [
    "Kohistan Arc"
  ],
  "source": "https://stratigraphy.pk",
  "license": "CC BY 4.0",
  "generated": "2026-10-29",
  "count": 22,
  "units": [
    {
      "id": "baraul-banda-formation",
      "name": "Baraul Banda Formation",
      "url": "https://stratigraphy.pk/formation/baraul-banda-formation",
      "rank": "",
      "status": "published",
      "era": "Cenozoic",
      "period": "Paleogene",
      "epoch": "Paleocene–Eocene",
      "age": "Late Paleocene–Early Eocene",
      "introducedBy": "Defined within the Dir Group by Sullivan et al.; provenance-characterised by Qasim (2026).",
      "typeLocality": "Dir–Kalam road, Dir district, Kohistan (western Kohistan–Ladakh Arc).",
      "coordinates": "",
      "lat": null,
      "lng": null,
      "thickness": "basal conglomerate 2–32 m; thick fine-grained succession above",
      "lithology": "Fine-grained deep-marine siliciclastics — slate, mudstone, siltstone and fine sandstone with minor fossiliferous limestone; basal conglomerate/breccia (2–32 m); quartzite; low-grade chlorite–sericite metamorphism.",
      "lithologyType": "metamorphic",
      "environment": "",
      "basin": "",
      "region": "",
      "provinces": "Kohistan Arc",
      "fossils": "Nummulites; Discocyclina; Actinocyclina",
      "synonyms": "",
      "economic": "",
      "economicResources": "",
      "overlies": "Mankial Metavolcanics",
      "underlies": "Utror Volcanic Formation",
      "lowerContact": "",
      "upperContact": "",
      "references": 1
    },
    {
      "id": "burji-formation",
      "name": "Burji Formation",
      "url": "https://stratigraphy.pk/formation/burji-formation",
      "rank": "formation",
      "status": "published",
      "era": "Mesozoic",
      "period": "Cretaceous",
      "epoch": "Cretaceous",
      "age": "Cretaceous",
      "introducedBy": "Desio (1978)",
      "typeLocality": "Burji La (Burjila), south of the Indus",
      "coordinates": "35.1600, 75.6300",
      "lat": 35.16,
      "lng": 75.63,
      "thickness": "",
      "lithology": "Several km of phyllites, shales and limestone with chlorite–epidote greenschists.",
      "lithologyType": "shale",
      "environment": "marine, metamorphic",
      "basin": "Kohistan-Ladakh Magmatic Arc",
      "region": "Ladakh Magmatic Arc",
      "provinces": "Kohistan Arc",
      "fossils": "",
      "synonyms": "",
      "economic": "",
      "economicResources": "",
      "overlies": "",
      "underlies": "",
      "lowerContact": "",
      "upperContact": "",
      "references": 3
    },
    {
      "id": "chalt-volcanic-group",
      "name": "Chalt Volcanic Group",
      "url": "https://stratigraphy.pk/formation/chalt-volcanic-group",
      "rank": "group",
      "status": "published",
      "era": "Mesozoic",
      "period": "Cretaceous",
      "epoch": "",
      "age": "Mid-Cretaceous (pre-suturing)",
      "introducedBy": "Petterson et al. (1990); Treloar et al. (1996)",
      "typeLocality": "Hunza Valley and nearby valleys, northern Kohistan (Chalt area).",
      "coordinates": "",
      "lat": null,
      "lng": null,
      "thickness": "",
      "lithology": "A relatively thick, lava-dominated accumulation of high-Mg (MgO 6-15%) tholeiitic volcanic rocks — Mg-basalt to Mg-andesite and boninite (boninitic Si/Mg/Cr/Ni/Ti/Zr signatures, negative Nb anomalies, high LILE/HFSE), bimodal with volumetrically minor rhyolites; strongly deformed with stretched pillows.",
      "lithologyType": "volcanic",
      "environment": "volcanic-arc, marine",
      "basin": "Kohistan Arc",
      "region": "Northern Greenstone Belt",
      "provinces": "Kohistan Arc",
      "fossils": "",
      "synonyms": "Chalt Volcanics",
      "economic": "",
      "economicResources": "",
      "overlies": "Jaglot Group",
      "underlies": "Yasin Group",
      "lowerContact": "conformable",
      "upperContact": "",
      "references": 4
    },
    {
      "id": "chilas-complex",
      "name": "Chilas Complex",
      "url": "https://stratigraphy.pk/formation/chilas-complex",
      "rank": "",
      "status": "published",
      "era": "Mesozoic",
      "period": "Cretaceous",
      "epoch": "mid-Cretaceous",
      "age": "Cretaceous (102-85 Ma)",
      "introducedBy": "Jan et al.",
      "typeLocality": "Chilas, Gilgit-Baltistan",
      "coordinates": "35.4200, 74.1000",
      "lat": 35.42,
      "lng": 74.1,
      "thickness": "8-10 km thick",
      "lithology": "Large mafic–ultramafic body — gabbronorite with serpentinized ultramafic rocks (dunite, harzburgite, pyroxenite), dolerite and gabbro; associated with the Babusar Pass mélange.",
      "lithologyType": "igneous",
      "environment": "volcanic-arc, plutonic",
      "basin": "",
      "region": "",
      "provinces": "Kohistan Arc",
      "fossils": "",
      "synonyms": "",
      "economic": "Platinum group element potential",
      "economicResources": "Other",
      "overlies": "Kamila Amphibolite",
      "underlies": "Kohistan Batholith",
      "lowerContact": "",
      "upperContact": "",
      "references": 8
    },
    {
      "id": "besham-banda-limestone",
      "name": "Deshan Banda Limestone",
      "url": "https://stratigraphy.pk/formation/besham-banda-limestone",
      "rank": "formation",
      "status": "published",
      "era": "Mesozoic",
      "period": "Jurassic-Cretaceous",
      "epoch": "",
      "age": "Middle Jurassic to Cretaceous",
      "introducedBy": "",
      "typeLocality": "Deshan Banda locality in upper Swat",
      "coordinates": "",
      "lat": null,
      "lng": null,
      "thickness": "Kalam Group about 800 m (Karandoki Slate + Deshan Banda Limestone + Shon Quartzite)",
      "lithology": "Grey limestone of the Kalam Group (Dir-Drosh area), overlying the Karandoki Slate and overlain by the Shon Quartzite; the Kalam Group is about 800 m thick and assigned a Middle Jurassic-Cretaceous age (Tahirkheli 1980).",
      "lithologyType": "limestone",
      "environment": "marine",
      "basin": "Kohistan-Ladakh Magmatic Arc",
      "region": "Dir-Drosh",
      "provinces": "Kohistan Arc",
      "fossils": "",
      "synonyms": "",
      "economic": "",
      "economicResources": "",
      "overlies": "",
      "underlies": "",
      "lowerContact": "",
      "upperContact": "",
      "references": 5
    },
    {
      "id": "dir-group",
      "name": "Dir Group",
      "url": "https://stratigraphy.pk/formation/dir-group",
      "rank": "group",
      "status": "published",
      "era": "Cenozoic",
      "period": "Paleogene",
      "epoch": "Latest Cretaceous–Paleocene",
      "age": "Late Paleocene to Early Eocene",
      "introducedBy": "Tahirkheli (1979)",
      "typeLocality": "",
      "coordinates": "",
      "lat": null,
      "lng": null,
      "thickness": "",
      "lithology": "Baraul Banda slate (shale, greywacke, calcareous beds and volcanics) and the Utror volcanic formation.",
      "lithologyType": "metamorphic",
      "environment": "volcanic-arc, marine",
      "basin": "Kohistan-Ladakh Magmatic Arc",
      "region": "Northern Greenstone Belt",
      "provinces": "Kohistan Arc",
      "fossils": "",
      "synonyms": "",
      "economic": "",
      "economicResources": "",
      "overlies": "",
      "underlies": "",
      "lowerContact": "",
      "upperContact": "",
      "references": 5
    },
    {
      "id": "drosh-formation",
      "name": "Drosh Formation",
      "url": "https://stratigraphy.pk/formation/drosh-formation",
      "rank": "formation",
      "status": "published",
      "era": "Mesozoic",
      "period": "Cretaceous",
      "epoch": "Cretaceous",
      "age": "Cretaceous",
      "introducedBy": "",
      "typeLocality": "Drosh",
      "coordinates": "35.5684, 71.8038",
      "lat": 35.5684,
      "lng": 71.8038,
      "thickness": "about 1,500 m",
      "lithology": "Epidotised vesicular andesite with interbedded thin red shales.",
      "lithologyType": "volcanic",
      "environment": "volcanic-arc",
      "basin": "Kohistan-Ladakh Magmatic Arc",
      "region": "Northern Greenstone Belt",
      "provinces": "Kohistan Arc",
      "fossils": "",
      "synonyms": "",
      "economic": "",
      "economicResources": "",
      "overlies": "Purit Formation",
      "underlies": "",
      "lowerContact": "",
      "upperContact": "",
      "references": 6
    },
    {
      "id": "gashu-confluence-volcanics",
      "name": "Gashu-Confluence Volcanics",
      "url": "https://stratigraphy.pk/formation/gashu-confluence-volcanics",
      "rank": "formation",
      "status": "published",
      "era": "Mesozoic",
      "period": "Cretaceous",
      "epoch": "Early Cretaceous",
      "age": "Cretaceous (Jaglot Group, Kohistan arc)",
      "introducedBy": "Khan T. et al. (1997)",
      "typeLocality": "Near the junction of Gashu Gah and Sai Nala, vicinity of Gilgit, Kohistan (Gilgit-Baltistan), northern Pakistan.",
      "coordinates": "",
      "lat": null,
      "lng": null,
      "thickness": "about 500 m (Khan T. et al. 1994)",
      "lithology": "About 0.5 km of volcaniclastics and massive to pillowed basalts (metavolcaniclastic, metavolcanic and metacalcareous rocks); conformable between the underlying Gilgit Formation and the overlying Thelichi Formation.",
      "lithologyType": "volcanic",
      "environment": "volcanic-arc, marine",
      "basin": "Kohistan Arc",
      "region": "Northern Greenstone Belt",
      "provinces": "Kohistan Arc",
      "fossils": "",
      "synonyms": "",
      "economic": "",
      "economicResources": "",
      "overlies": "Gilgit Formation",
      "underlies": "Thelichi Formation",
      "lowerContact": "conformable",
      "upperContact": "conformable",
      "references": 3
    },
    {
      "id": "gawuch-formation",
      "name": "Gawuch Formation",
      "url": "https://stratigraphy.pk/formation/gawuch-formation",
      "rank": "formation",
      "status": "published",
      "era": "Mesozoic",
      "period": "Cretaceous",
      "epoch": "Cretaceous",
      "age": "Early Cretaceous",
      "introducedBy": "",
      "typeLocality": "Gawuch Gol",
      "coordinates": "35.6000, 71.8000",
      "lat": 35.6,
      "lng": 71.8,
      "thickness": "about 2,000 m",
      "lithology": "Green phyllites and limestone; intruded near the base by diorite.",
      "lithologyType": "limestone",
      "environment": "volcanic-arc, marine",
      "basin": "Kohistan-Ladakh Magmatic Arc",
      "region": "Northern Greenstone Belt",
      "provinces": "Kohistan Arc",
      "fossils": "",
      "synonyms": "",
      "economic": "",
      "economicResources": "",
      "overlies": "",
      "underlies": "Purit Formation",
      "lowerContact": "",
      "upperContact": "",
      "references": 6
    },
    {
      "id": "gilgit-formation",
      "name": "Gilgit Formation",
      "url": "https://stratigraphy.pk/formation/gilgit-formation",
      "rank": "formation",
      "status": "published",
      "era": "Mesozoic",
      "period": "Cretaceous",
      "epoch": "Early Cretaceous",
      "age": "Cretaceous (Jaglot Group, Kohistan arc)",
      "introducedBy": "Khan T. et al. (1996)",
      "typeLocality": "Sai Nala, near Gilgit, Kohistan (Gilgit-Baltistan), northern Pakistan.",
      "coordinates": "",
      "lat": null,
      "lng": null,
      "thickness": "about 1 km (succession of schists, paragneisses, calc-silicates and amphibolites, some derived from pillowed basalts)",
      "lithology": "Interlayered schists, paragneisses and amphibolites (the Gilgit–Kachura gneisses of Le Fort & Pecher).",
      "lithologyType": "metamorphic",
      "environment": "volcanic-arc, metamorphic",
      "basin": "Kohistan-Ladakh Magmatic Arc",
      "region": "Northern Greenstone Belt",
      "provinces": "Kohistan Arc",
      "fossils": "",
      "synonyms": "",
      "economic": "",
      "economicResources": "",
      "overlies": "",
      "underlies": "Gashu-confluence volcanics",
      "lowerContact": "",
      "upperContact": "",
      "references": 9
    },
    {
      "id": "jaglot-group",
      "name": "Jaglot Group",
      "url": "https://stratigraphy.pk/formation/jaglot-group",
      "rank": "group",
      "status": "published",
      "era": "Mesozoic",
      "period": "Jurassic–Cretaceous",
      "epoch": "Middle Jurassic–Middle Cretaceous",
      "age": "Jurassic–Cretaceous",
      "introducedBy": "Khan T. et al. (1994)",
      "typeLocality": "",
      "coordinates": "",
      "lat": null,
      "lng": null,
      "thickness": "more than ~2.5 km total (Gilgit Formation ~1 km + Gashu-Confluence Volcanics ~0.5 km + Thelichi Formation >1 km)",
      "lithology": "Schists and paragneisses (Gilgit Formation) overlain by the Gashu-Confluence Volcanics and the metavolcanic-bearing Thelichi Formation.",
      "lithologyType": "metamorphic",
      "environment": "volcanic-arc, marine",
      "basin": "Kohistan-Ladakh Magmatic Arc",
      "region": "Northern Greenstone Belt",
      "provinces": "Kohistan Arc",
      "fossils": "",
      "synonyms": "",
      "economic": "",
      "economicResources": "",
      "overlies": "",
      "underlies": "",
      "lowerContact": "",
      "upperContact": "",
      "references": 9
    },
    {
      "id": "jijal-complex",
      "name": "Jijal Complex",
      "url": "https://stratigraphy.pk/formation/jijal-complex",
      "rank": "",
      "status": "published",
      "era": "Mesozoic",
      "period": "Cretaceous",
      "epoch": "Early–mid Cretaceous",
      "age": "Cretaceous",
      "introducedBy": "Characterised by Coward et al. (1984); high-pressure petrology by Jan & Howie (1981)",
      "typeLocality": "Between Patan and Jijal, Indus valley, Kohistan (~200 km²).",
      "coordinates": "",
      "lat": null,
      "lng": null,
      "thickness": "",
      "lithology": "Garnet-clinopyroxene-plagioclase granulites with relics of norite, passing southward through increasing clinopyroxene and hornblendites into a main ultramafic body of clinopyroxenites and dunites with lenses of layered chromitite up to 5 m thick.",
      "lithologyType": "",
      "environment": "magmatic arc (lower crust to uppermost mantle)",
      "basin": "",
      "region": "",
      "provinces": "Kohistan Arc",
      "fossils": "",
      "synonyms": "",
      "economic": "",
      "economicResources": "",
      "overlies": "",
      "underlies": "Kamila Amphibolite",
      "lowerContact": "",
      "upperContact": "",
      "references": 1
    },
    {
      "id": "kamila-amphibolite-belt",
      "name": "Kamila Amphibolite Belt",
      "url": "https://stratigraphy.pk/formation/kamila-amphibolite-belt",
      "rank": "complex",
      "status": "published",
      "era": "Mesozoic",
      "period": "Cretaceous",
      "epoch": "",
      "age": "Early to mid-Cretaceous (transition from oceanic to arc magmatism inferred); hornblende Ar-Ar cooling ages c. 80-83 Ma record suturing-related deformation",
      "introducedBy": "Treloar et al. (1989, 1996)",
      "typeLocality": "Kamila area, Indus valley, Kohistan; forms the southern part of the arc (Kamila Shear Zone).",
      "coordinates": "",
      "lat": null,
      "lng": null,
      "thickness": "",
      "lithology": "Amphibolite-facies basic lavas (some pillowed), hyaloclastite and breccias intruded by gabbros and diorites; two suites — a Ti-rich, HFSE/HREE-enriched high-Ti oceanic-type MORB suite and a Ti-poor, calc-alkaline low-Ti arc suite with a negative Nb anomaly.",
      "lithologyType": "breccia",
      "environment": "volcanic-arc, oceanic, marine",
      "basin": "Kohistan Arc",
      "region": "Kohistan Batholith",
      "provinces": "Kohistan Arc",
      "fossils": "",
      "synonyms": "",
      "economic": "",
      "economicResources": "",
      "overlies": "",
      "underlies": "Jaglot Group",
      "lowerContact": "",
      "upperContact": "intrusive",
      "references": 5
    },
    {
      "id": "katzarah-formation",
      "name": "Katzarah Formation",
      "url": "https://stratigraphy.pk/formation/katzarah-formation",
      "rank": "formation",
      "status": "under-review",
      "era": "Mesozoic",
      "period": "Cretaceous–Paleogene",
      "epoch": "Cretaceous–Eocene",
      "age": "Cretaceous–Eocene",
      "introducedBy": "Desio (1978)",
      "typeLocality": "between the Shigar and Indus rivers",
      "coordinates": "35.31, 75.62",
      "lat": 35.31,
      "lng": 75.62,
      "thickness": "about 1,500 m",
      "lithology": "Siltstones, schists, slates and phyllites with quartzitic sandstone intercalations (the Katzarah schists).",
      "lithologyType": "siltstone",
      "environment": "marine, metamorphic",
      "basin": "Kohistan-Ladakh Magmatic Arc",
      "region": "Ladakh Magmatic Arc",
      "provinces": "Kohistan Arc",
      "fossils": "",
      "synonyms": "",
      "economic": "",
      "economicResources": "",
      "overlies": "",
      "underlies": "",
      "lowerContact": "",
      "upperContact": "",
      "references": 5
    },
    {
      "id": "kohistan-batholith",
      "name": "Kohistan Batholith",
      "url": "https://stratigraphy.pk/formation/kohistan-batholith",
      "rank": "complex",
      "status": "published",
      "era": "Mesozoic",
      "period": "Cretaceous-Paleogene",
      "epoch": "",
      "age": "Cretaceous to Oligocene (c. 104-26 Ma; Stage 1 c. 104 Ma pre-suturing, Stages 2-3 c. 85-26 Ma post-suturing)",
      "introducedBy": "Petterson & Windley (1985)",
      "typeLocality": "Northern Kohistan (Gilgit-Chalt-Hunza belt), intruding the Jaglot and Chalt sequences.",
      "coordinates": "",
      "lat": null,
      "lng": null,
      "thickness": "",
      "lithology": "Calc-alkaline gabbroic to granitoid plutons — tonalites (e.g. the Matum Das Stage-1 tonalite), diorites, granodiorites, granites and granite sheets (e.g. Parri, Indus Confluence).",
      "lithologyType": "igneous",
      "environment": "volcanic-arc, plutonic",
      "basin": "Kohistan Arc",
      "region": "Kohistan Batholith",
      "provinces": "Kohistan Arc",
      "fossils": "",
      "synonyms": "",
      "economic": "",
      "economicResources": "",
      "overlies": "",
      "underlies": "",
      "lowerContact": "",
      "upperContact": "intrusive",
      "references": 6
    },
    {
      "id": "peshmal-schists",
      "name": "Peshmal Schists",
      "url": "https://stratigraphy.pk/formation/peshmal-schists",
      "rank": "formation",
      "status": "published",
      "era": "Mesozoic",
      "period": "Cretaceous",
      "epoch": "",
      "age": "Mid-Cretaceous (basal Jaglot Group)",
      "introducedBy": "Sullivan et al. (1993)",
      "typeLocality": "Peshmal, Swat Valley.",
      "coordinates": "",
      "lat": null,
      "lng": null,
      "thickness": "",
      "lithology": "Quartz-bearing volcaniclastic (superficially greywacke-like) sediments with well-developed graded bedding; calc-alkaline arc-type provenance.",
      "lithologyType": "volcanic",
      "environment": "volcanic-arc, marine",
      "basin": "Kohistan Arc",
      "region": "Northern Greenstone Belt",
      "provinces": "Kohistan Arc",
      "fossils": "",
      "synonyms": "",
      "economic": "",
      "economicResources": "",
      "overlies": "",
      "underlies": "Jaglot Group",
      "lowerContact": "",
      "upperContact": "conformable",
      "references": 1
    },
    {
      "id": "purit-formation",
      "name": "Purit Formation",
      "url": "https://stratigraphy.pk/formation/purit-formation",
      "rank": "formation",
      "status": "published",
      "era": "Mesozoic",
      "period": "Cretaceous",
      "epoch": "Cretaceous",
      "age": "Cretaceous",
      "introducedBy": "",
      "typeLocality": "Drosh Gol, SE of Kawash",
      "coordinates": "35.5500, 71.8500",
      "lat": 35.55,
      "lng": 71.85,
      "thickness": "about 1,000 m",
      "lithology": "Dominantly red shales with subordinate sandstone and conglomerate.",
      "lithologyType": "shale",
      "environment": "marine, marginal marine",
      "basin": "Kohistan-Ladakh Magmatic Arc",
      "region": "Northern Greenstone Belt",
      "provinces": "Kohistan Arc",
      "fossils": "",
      "synonyms": "",
      "economic": "",
      "economicResources": "",
      "overlies": "Gawuch Formation",
      "underlies": "Drosh Formation",
      "lowerContact": "",
      "upperContact": "",
      "references": 4
    },
    {
      "id": "shamran-volcanic-group",
      "name": "Shamran Volcanic Group",
      "url": "https://stratigraphy.pk/formation/shamran-volcanic-group",
      "rank": "group",
      "status": "published",
      "era": "Cenozoic",
      "period": "Paleogene",
      "epoch": "Paleocene-Eocene",
      "age": "Eocene (Shamran volcanics c. 58 Ma, Western Volcanics c. 61 Ma; post-suturing)",
      "introducedBy": "Treloar et al. (1996)",
      "typeLocality": "Shamran area, Kohistan.",
      "coordinates": "",
      "lat": null,
      "lng": null,
      "thickness": "",
      "lithology": "Highly evolved calc-alkaline volcanics spanning basaltic andesite to rhyolite with strong LILE enrichment and high LILE/HFSE; includes the bimodal Western Volcanics and the Shamran and Drosh volcanics.",
      "lithologyType": "volcanic",
      "environment": "volcanic-arc, continental",
      "basin": "Kohistan Arc",
      "region": "Northern Greenstone Belt",
      "provinces": "Kohistan Arc",
      "fossils": "",
      "synonyms": "",
      "economic": "",
      "economicResources": "",
      "overlies": "",
      "underlies": "",
      "lowerContact": "",
      "upperContact": "",
      "references": 1
    },
    {
      "id": "shigar-group",
      "name": "Shigar Group",
      "url": "https://stratigraphy.pk/formation/shigar-group",
      "rank": "group",
      "status": "published",
      "era": "Mesozoic",
      "period": "Cretaceous–Paleogene",
      "epoch": "Cretaceous–Eocene",
      "age": "Cretaceous–Eocene",
      "introducedBy": "Desio (1978)",
      "typeLocality": "",
      "coordinates": "35.427046, 75.730494",
      "lat": 35.427046,
      "lng": 75.730494,
      "thickness": "",
      "lithology": "Siltstones, schists, slates and phyllites with quartzitic sandstone intercalations (Katzarah schists).",
      "lithologyType": "siltstone",
      "environment": "marine, metamorphic",
      "basin": "Kohistan-Ladakh Magmatic Arc",
      "region": "Ladakh Magmatic Arc",
      "provinces": "Kohistan Arc",
      "fossils": "",
      "synonyms": "",
      "economic": "",
      "economicResources": "",
      "overlies": "",
      "underlies": "",
      "lowerContact": "",
      "upperContact": "",
      "references": 4
    },
    {
      "id": "skardu-group",
      "name": "Skardu Group",
      "url": "https://stratigraphy.pk/formation/skardu-group",
      "rank": "group",
      "status": "published",
      "era": "Mesozoic",
      "period": "Cretaceous–Paleogene",
      "epoch": "Cretaceous–Eocene",
      "age": "Cretaceous–Eocene",
      "introducedBy": "Malkani & Mahmood (2016)",
      "typeLocality": "",
      "coordinates": "",
      "lat": null,
      "lng": null,
      "thickness": "",
      "lithology": "Metasedimentary schists, slates, phyllites, quartzite and limestone.",
      "lithologyType": "metamorphic",
      "environment": "marine, metamorphic",
      "basin": "Kohistan-Ladakh Magmatic Arc",
      "region": "Ladakh Magmatic Arc",
      "provinces": "Kohistan Arc",
      "fossils": "",
      "synonyms": "",
      "economic": "",
      "economicResources": "",
      "overlies": "",
      "underlies": "",
      "lowerContact": "",
      "upperContact": "",
      "references": 4
    },
    {
      "id": "thelichi-formation",
      "name": "Thelichi Formation",
      "url": "https://stratigraphy.pk/formation/thelichi-formation",
      "rank": "formation",
      "status": "published",
      "era": "Mesozoic",
      "period": "Cretaceous",
      "epoch": "Middle–Late Cretaceous",
      "age": "Cretaceous",
      "introducedBy": "Tahirkheli (1982)",
      "typeLocality": "",
      "coordinates": "",
      "lat": null,
      "lng": null,
      "thickness": "a volcanic basal part overlain by >1 km of turbidites, with a thick marble unit in the middle",
      "lithology": "Slates, marbles, metavolcanics and laminated sandstone.",
      "lithologyType": "metamorphic",
      "environment": "volcanic-arc, marine",
      "basin": "Kohistan-Ladakh Magmatic Arc",
      "region": "Northern Greenstone Belt",
      "provinces": "Kohistan Arc",
      "fossils": "",
      "synonyms": "correlated with the Yasin Group",
      "economic": "",
      "economicResources": "",
      "overlies": "Gashu-confluence volcanics",
      "underlies": "",
      "lowerContact": "",
      "upperContact": "",
      "references": 7
    },
    {
      "id": "yasin-group",
      "name": "Yasin Group",
      "url": "https://stratigraphy.pk/formation/yasin-group",
      "rank": "group",
      "status": "published",
      "era": "Mesozoic",
      "period": "Cretaceous",
      "epoch": "Aptian–Albian",
      "age": "Cretaceous",
      "introducedBy": "Ivanac et al. (1956)",
      "typeLocality": "",
      "coordinates": "",
      "lat": null,
      "lng": null,
      "thickness": "",
      "lithology": "Lavas, tuffs and agglomerates with lenses and beds of fossiliferous massive and shaly limestone.",
      "lithologyType": "volcanic",
      "environment": "volcanic-arc, shallow marine",
      "basin": "Kohistan-Ladakh Magmatic Arc",
      "region": "Northern Greenstone Belt",
      "provinces": "Kohistan Arc",
      "fossils": "Orbitolina; Rudists (Hippurites)",
      "synonyms": "",
      "economic": "",
      "economicResources": "",
      "overlies": "",
      "underlies": "",
      "lowerContact": "",
      "upperContact": "",
      "references": 6
    }
  ]
}