Geologic Map of Quadrangle 3468, Chak Wardak-Syahgerd (509) and Kabul (510) Quadrangles, Afghanistan

Abstract

Conglomerate and sandstone (Holocene)-Alluvium: shingly and detrital sediments, gravel, sand more abundant than silt and clay Fan alluvium and colluvium (Holocene and late Pleistocene)-Fan alluvium and colluvium: shingly and detrital sediments, gravel, sand, clay Conglomerate and sandstone (late Pleistocene)-Alluvium: shingly and detrital sediments, gravel, sand more abundant than silt and clay Loess (late Pleistocene)-Loess more abundant than sand, clay Conglomerate and sandstone (middle Pleistocene)-Alluvium: shingly and detrital sediments, gravel, sand more abundant than silt and clay Travertine (middle Pleistocene)-Travertine Conglomerate and sandstone (early Pleistocene)-Alluvium: shingly and detrital sediments, gravel, sand more abundant than silt and clay Conglomerate and sandstone (Pliocene)-Gray conglomerate, grit, sandstone more abundant than siltstone, clay, limestone, marl; gypsum, salt; acid to mafic volcanic rocks Conglomerate and sandstone (Miocene)-Red conglomerate, sandstone more abundant than siltstone, clay; acid and mafic volcanic rocks; limestone, marl; olivine basalt, trachybasalt, andesitic basalt (Taywara Series) Granite (Oligocene)-Granite (Phase III) Granodiorite and granosyenite (Oligocene)-Granodiorite, alaskite, granosyenite more abundant than granite (Phase II) Granodiorite (Oligocene)-Granodiorite (Phase I) Granite and granodiorite (Oligocene)-Granite, granite porphyry, granodiorite more abundant than quartz syenite, granosyenite Sandstone and siltstone (Oligocene)-Sandstone, siltstone more abundant than clay, conglomerate, limestone, marl; acid and mafic volcanic rocks Rhyolite lava (Oligocene and Eocene)-Basaltic andesite, basalt, trachyte, dacite, rhyolite, ignimbrite, tuff; conglomerate, sandstone, siltstone, limestone Andesite lava (Oligocene and Eocene)-Basaltic andesite, basalt, trachyte, dacite, rhyolite, ignimbrite, tuff; conglomerate, sandstone, siltstone, limestone Ultramafic intrusions (Eocene)-Dunite, peridotite, serpentinite Clay and shale (Eocene)-Clay, shale, siltstone more abundant than sandstone, limestone, marl, gypsum, conglomerate Conglomerate and sandstone (Paleocene)-Conglomerate, sandstone more abundant than siltstone, limestone, shale; mafic volcanic rocks Gabbro and monzonite (Paleocene and Late Cretaceous)-Gabbro, monzonite more abundant than diorite, granite, granosyenite, syenite porphyry, syenite Sandstone and siltstone (Late Cretaceous)-Limestone (Middle Afghanistan); redstone, siltstone, conglomerate (Khashrud tectonic zone) Gabbro and monzonite (Early Cretaceous)-Gabbro, monzonite more abundant than diorite, granodiorite Basalt lava (Late Triassic)-Shale more abundant than phyllite, andesite to basalt (greenstone altered), limestone (Kotagai Series) Siltstone and sandstone (Late Triassic (Norian and Rhaetian))-Siltstone, sandstone more abundant than shale, conglomerate Limestone and dolomite (Late Triassic (Carnian and Norian))-Limestone, dolomite Sandstone and siltstone (Late and Middle Triassic)-Limestone, dolomite, marl (Kabul Massif and Kunar tec...

Geologic and topographic maps of the Kabul South 30' x 60' quadrangle, Afghanistan

“…That map, which is not widely available anymore, was re-released by Doebrich and Wahl (2006) at 1:850,000-scale. Bohannon and Turner (2007) compiled the Kabul-Chak-e-Wardak 1:250,000-scale map, also based on Abdullah and Chmyriov's (1977) version. No attempt was made on either of the latter maps to modify or re-interpret the original geology, so lithologic and geologic descriptions based on preexisting maps are attributed to Abdullah and Chmyriov (1977), although the newer maps are more easily obtained and show the same thing.…”

Terrains of Torment

“…The area of the Nuristan Hindu Kush Mountains Geomorphic Province (Figure 3.13) is characterized by the rugged mountains of the Central Hindu Kush Mountain Section (Stoesser, 2005;Lindsay et al, 2005), as well as the Jalalabad Basin Section to the south, and the mountains of the Spin Ghar (Safed Koh) Section on the border with Pakistan (Bohanon and Turner, 2005). The Nuristan Hindu Kush Mountains Geomorphic Province in the Transpressional Plate Boundary Region is set off largely from its neighboring provinces by major fault systems.…”

“…They are an isolated, east-westtrending, upthrust mass of largely crystalline gneisses and granites with various admixtures of gabbros, mafic metavolcanics, marbles, and even migmatites, all of Proterozoic age (Bohanon and Turner, 2005). These resistant metamorphic and igneous rocks have been subject to the forces of deep weathering for many millions of years, with the result that they have formed a variety of erosional residuals of the tor type.…”

“…Myslil et al (1982) and Treloar and Izatt (1993) noted that the Kabul block is now bounded on the east and west by major left-lateral strike-slip faults, as well as a thrust fault at depth in the north. The rocks that outcrop in the Kabul Basin range from Precambrian Proterozoic metamorphic rocks, mainly gneisses, which were progressively overlain by various Phanerozoic (Paleozoic, Mesozoic, and Cenozoic) sedimentary rocks, as well as a few igneous rocks (Wolfhart and Wittekindt, 1980;Bohanon and Turner, 2005;Lindsay at al., 2005;Maldonado and Turner, 2005). Essentially, the Kabul block can be thought of as a continental island mass that converged on southern Asia from the south as the PaleoTethyan sea closed up during the Cretaceous (Şengör et al, 1988;1996;Treloar and Izzatt, 1993;.…”

Organic petrology of subbituminous carbonaceous shale samples from Chalāw, Kabul Province, Afghanistan: Considerations for paleoenvironment and energy resource potential

“…The carbonaceous shales at Chalāw are hosted in Neogene (?) basin-fill and fan deposits that blanket the Kabul Basin (Bohannon and Turner, 2005;Doebrich et al, 2006). These nearly horizontal strata were mapped as part of the Lataband Series (Abdullah and Chmyriov, 1977) and are attributed to deposition occurring during Tertiary subsidence (Mennessier, 1968).…”