{"type":"FeatureCollection","name":"Pakistan Stratigraphy Explorer — Chagai-Raskoh Magmatic Arc type localities","license":"CC BY 4.0","source":"https://stratigraphy.pk","generated":"2026-10-29","features":[{"type":"Feature","geometry":{"type":"Point","coordinates":[62.8,29.1]},"properties":{"id":"humai-formation","name":"Humai Formation","url":"https://stratigraphy.pk/formation/humai-formation","rank":"","era":"Mesozoic","period":"Cretaceous","age":"Late Cretaceous (Maastrichtian; ~72.2-66.0 Ma)","basin":"","region":"","provinces":"Chagai Hills","lithology":"Variable: shale with calcareous sandstone, siltstone, thin-bedded limestone and volcanic conglomerate (lower); massive reefoid limestone (upper).","economicResources":"","status":"published"}},{"type":"Feature","geometry":{"type":"Point","coordinates":[62.8,29.1]},"properties":{"id":"koh-i-sultan-volcanic-group","name":"Koh-i-Sultan Volcanic Group","url":"https://stratigraphy.pk/formation/koh-i-sultan-volcanic-group","rank":"","era":"Cenozoic","period":"Neogene–Quaternary","age":"Late Pliocene to Pleistocene","basin":"","region":"","provinces":"Chagai Hills","lithology":"Intercalated dacitic-andesitic lava flows and volcaniclastics.","economicResources":"Metals & minerals","status":"published"}},{"type":"Feature","geometry":{"type":"Point","coordinates":[61.5662,29.2777]},"properties":{"id":"saindak-formation","name":"Saindak Formation","url":"https://stratigraphy.pk/formation/saindak-formation","rank":"","era":"Cenozoic","period":"Paleogene","age":"Eocene (Ypresian-Priabonian; ~56-33.9 Ma)","basin":"","region":"","provinces":"Chagai Hills","lithology":"Interbedded shale, sandstone, limestone and minor volcanic conglomerate; fossiliferous; local pure gypsum beds in red shale.","economicResources":"Metals & minerals","status":"published"}}]}