Detrital mode and whole-rock geochemistry of the fluvial succession, Pishin Belt, Pakistan: Implications on provenance and source area weathering in periferal foreland basins

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Detrital mode and whole-rock geochemistry of the fluvial succession, Pishin Belt, Pakistan: Implications on provenance and source area weathering in periferal foreland basins. / Kasi, Aimal Khan; Kassi, Akhtar Muhammad; Friis, Henrik; Umar, Muhammad; Mohibulla, Mohibulla; Kakar, Muhammad Ishaq.

I: Arabian Journal of Geosciences, Bind 9, Nr. 401, 02.05.2016, s. 1-21.

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avisTidsskriftartikelForskningpeer review

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Kasi, Aimal Khan ; Kassi, Akhtar Muhammad ; Friis, Henrik ; Umar, Muhammad ; Mohibulla, Mohibulla ; Kakar, Muhammad Ishaq. / Detrital mode and whole-rock geochemistry of the fluvial succession, Pishin Belt, Pakistan: Implications on provenance and source area weathering in periferal foreland basins. I: Arabian Journal of Geosciences. 2016 ; Bind 9, Nr. 401. s. 1-21.

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@article{f782169e825c40b4abaa81d7209a7150,
title = "Detrital mode and whole-rock geochemistry of the fluvial succession, Pishin Belt, Pakistan: Implications on provenance and source area weathering in periferal foreland basins",
abstract = "Detrital mode and geochemical composition of sandstones and mudstones of the Miocene Dasht Murgha Group (DMG) and Pliocene Malthanai Formation (MF) of the Pishin Belt, north-western Pakistan have been examined to identify their provenance and source area weathering. Sandstones of the Dasht Murgha Group and Malthanai Formation are lithic to sublith- arenites, rich in quartz, and metamorphic and sedimentary lithic fragments, indicating a recycled orogenic source. LmLvLs plots show that the Dasht Murgha Group is rich in sedimentary and metamorphic lithic fragments (Lm35Lv18Ls47), while samples of the Malthanai Formation are overwhelmingly rich in sedimentary fragments (Lm14Lv10Ls76). Eocene Nisai Formation and Oligocene Khojak Formation within the Pishin Belt were mainly providing the sedimentary/metasedimentary detritus. High content of monocrystalline quartz (DMG: 28.21{\%}; MF: 30.7), and higher SiO2/Al2O3 ratios in sandstones (DMG: 9.86; MF: 11.98) also indicate high maturity of sandstones due to recycling of source terrain in collision orogens. High Cr/Ni (DMG: 5.23; MF: 6.17) and moderate Cr/V (DMG: 3.96; MF: 3.88) ratios suggest significant contributions from mafic and ultramafic detritus derived from Muslim Bagh-Zhob Ophiolite. Malthanai Formation has higher CIA and CIW values (68.96 and 77.53) than Dasht Murgha Group (63.87 & 70.93); however, they both indicate low to moderate weathering intensities. Dasht Murgha group and Malthanai Formation have higher weathering of the source area. In A-CN-K diagrams the samples make linear trend towards illite which suggests that the sediments were derived from a tectonically active source going through non-steady-state weathering, where the detritus has been derived from different zones of weathering profiles.",
keywords = "Detrital modes . Geochemistry . Provenance . Neogene succession . Pishin Belt . Western Pakistan",
author = "Kasi, {Aimal Khan} and Kassi, {Akhtar Muhammad} and Henrik Friis and Muhammad Umar and Mohibulla Mohibulla and Kakar, {Muhammad Ishaq}",
year = "2016",
month = "5",
day = "2",
doi = "10.1007/s12517-016-2415-9",
language = "English",
volume = "9",
pages = "1--21",
journal = "Arabian Journal of Geosciences",
issn = "1866-7511",
publisher = "Springer",
number = "401",

}

RIS

TY - JOUR

T1 - Detrital mode and whole-rock geochemistry of the fluvial succession, Pishin Belt, Pakistan: Implications on provenance and source area weathering in periferal foreland basins

AU - Kasi, Aimal Khan

AU - Kassi, Akhtar Muhammad

AU - Friis, Henrik

AU - Umar, Muhammad

AU - Mohibulla, Mohibulla

AU - Kakar, Muhammad Ishaq

PY - 2016/5/2

Y1 - 2016/5/2

N2 - Detrital mode and geochemical composition of sandstones and mudstones of the Miocene Dasht Murgha Group (DMG) and Pliocene Malthanai Formation (MF) of the Pishin Belt, north-western Pakistan have been examined to identify their provenance and source area weathering. Sandstones of the Dasht Murgha Group and Malthanai Formation are lithic to sublith- arenites, rich in quartz, and metamorphic and sedimentary lithic fragments, indicating a recycled orogenic source. LmLvLs plots show that the Dasht Murgha Group is rich in sedimentary and metamorphic lithic fragments (Lm35Lv18Ls47), while samples of the Malthanai Formation are overwhelmingly rich in sedimentary fragments (Lm14Lv10Ls76). Eocene Nisai Formation and Oligocene Khojak Formation within the Pishin Belt were mainly providing the sedimentary/metasedimentary detritus. High content of monocrystalline quartz (DMG: 28.21%; MF: 30.7), and higher SiO2/Al2O3 ratios in sandstones (DMG: 9.86; MF: 11.98) also indicate high maturity of sandstones due to recycling of source terrain in collision orogens. High Cr/Ni (DMG: 5.23; MF: 6.17) and moderate Cr/V (DMG: 3.96; MF: 3.88) ratios suggest significant contributions from mafic and ultramafic detritus derived from Muslim Bagh-Zhob Ophiolite. Malthanai Formation has higher CIA and CIW values (68.96 and 77.53) than Dasht Murgha Group (63.87 & 70.93); however, they both indicate low to moderate weathering intensities. Dasht Murgha group and Malthanai Formation have higher weathering of the source area. In A-CN-K diagrams the samples make linear trend towards illite which suggests that the sediments were derived from a tectonically active source going through non-steady-state weathering, where the detritus has been derived from different zones of weathering profiles.

AB - Detrital mode and geochemical composition of sandstones and mudstones of the Miocene Dasht Murgha Group (DMG) and Pliocene Malthanai Formation (MF) of the Pishin Belt, north-western Pakistan have been examined to identify their provenance and source area weathering. Sandstones of the Dasht Murgha Group and Malthanai Formation are lithic to sublith- arenites, rich in quartz, and metamorphic and sedimentary lithic fragments, indicating a recycled orogenic source. LmLvLs plots show that the Dasht Murgha Group is rich in sedimentary and metamorphic lithic fragments (Lm35Lv18Ls47), while samples of the Malthanai Formation are overwhelmingly rich in sedimentary fragments (Lm14Lv10Ls76). Eocene Nisai Formation and Oligocene Khojak Formation within the Pishin Belt were mainly providing the sedimentary/metasedimentary detritus. High content of monocrystalline quartz (DMG: 28.21%; MF: 30.7), and higher SiO2/Al2O3 ratios in sandstones (DMG: 9.86; MF: 11.98) also indicate high maturity of sandstones due to recycling of source terrain in collision orogens. High Cr/Ni (DMG: 5.23; MF: 6.17) and moderate Cr/V (DMG: 3.96; MF: 3.88) ratios suggest significant contributions from mafic and ultramafic detritus derived from Muslim Bagh-Zhob Ophiolite. Malthanai Formation has higher CIA and CIW values (68.96 and 77.53) than Dasht Murgha Group (63.87 & 70.93); however, they both indicate low to moderate weathering intensities. Dasht Murgha group and Malthanai Formation have higher weathering of the source area. In A-CN-K diagrams the samples make linear trend towards illite which suggests that the sediments were derived from a tectonically active source going through non-steady-state weathering, where the detritus has been derived from different zones of weathering profiles.

KW - Detrital modes . Geochemistry . Provenance . Neogene succession . Pishin Belt . Western Pakistan

U2 - 10.1007/s12517-016-2415-9

DO - 10.1007/s12517-016-2415-9

M3 - Journal article

VL - 9

SP - 1

EP - 21

JO - Arabian Journal of Geosciences

JF - Arabian Journal of Geosciences

SN - 1866-7511

IS - 401

ER -