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Sedimentary evolution of middle Jurassic epeiric carbonate ramp Hazara Basin Lesser Himalaya Pakistan
Khan, Malik Muhammad Saud Sajid1,2; Jadoon, Qasim Ali3; Umar, Muhammad4; Khan, Ahsan Ali1,5
2021-09-01
发表期刊CARBONATES AND EVAPORITES
ISSN0891-2556
卷号36期号:3页码:21
摘要

Detailed microfacies analysis and sequence stratigraphic architecture of the Bajocian- mid-Callovian Samana Suk Formation exposed in the Hazara Basin, Lesser Himalaya of Pakistan, were examined. The formation reveals deposition on a carbonate ramp under variable low to high energy environments, such as carbonate mud-flats, lagoon, barrier/shoals, and open-marine setting. The stacking pattern of facies association depicts the change in depositional style in response to sea-level fluctuations. Vertical distribution of recognized facies allows dividing the Bajocian- mid-Callovian strata into one major sequence of second-order hierarchy with superimposed four cycles of third-order genetic sequences (DS1-DS4), bounded above and below by type-one unconformity. The succession comprised of the Bajocian- early Callovian Transgressive System Tract (TST) and early-mid Callovian Highstand System Tract (HST) differentiated by maximum flooding surface. It is reasonable to compare at least Bajocian- early Callovian retrogradational cycle (TST) with long-term global eustatic reconstruction suggesting eustatic change as a primary control on regional shoreline movement. Later, the sea level tends to drop toward the middle of Callovian, forming a prograding Highstand System Tract (HST). These HST deposits record a significant retreat of shoreline toward the termination of mid-Callovian, which ultimately led to regional uniformity above the Samana Suk Formation. This cycle indicates deflection from global sea-level signatures ascribes to regional tectonics in the region. For the first time, this study signifies the importance of regional tectonics overwhelming the global eustatic record of middle Jurassic carbonates in the region.

关键词Lesser Himalaya Microfacies Carbonate ramp Global sea-level Regional tectonics
DOI10.1007/s13146-021-00713-w
收录类别SCI
语种英语
关键词[WOS]SEA-LEVEL CHANGES ; SEQUENCE STRATIGRAPHY ; INDIAN PLATE ; FACIES ; SUCCESSION ; ISLAND ; LIMESTONES ; ARGENTINA ; PATTERNS ; COASTAL
WOS研究方向Geology
WOS类目Geology
WOS记录号WOS:000691532800002
出版者SPRINGER
文献类型期刊论文
条目标识符http://ir.nigpas.ac.cn/handle/332004/39798
专题中国科学院南京地质古生物研究所
通讯作者Umar, Muhammad
作者单位1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
2.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Peoples R China
3.COMSATS Univ Islamabad, Dept Earth Sci, Abbottabad Campus, Abbottabad, Pakistan
4.Univ Haripur, Dept Earth Sci, Haripur, Pakistan
5.Chinese Acad Sci, Inst Tibetan Plateau & Res, Beijing, Peoples R China
第一作者单位中国科学院南京地质古生物研究所
推荐引用方式
GB/T 7714
Khan, Malik Muhammad Saud Sajid,Jadoon, Qasim Ali,Umar, Muhammad,et al. Sedimentary evolution of middle Jurassic epeiric carbonate ramp Hazara Basin Lesser Himalaya Pakistan[J]. CARBONATES AND EVAPORITES,2021,36(3):21.
APA Khan, Malik Muhammad Saud Sajid,Jadoon, Qasim Ali,Umar, Muhammad,&Khan, Ahsan Ali.(2021).Sedimentary evolution of middle Jurassic epeiric carbonate ramp Hazara Basin Lesser Himalaya Pakistan.CARBONATES AND EVAPORITES,36(3),21.
MLA Khan, Malik Muhammad Saud Sajid,et al."Sedimentary evolution of middle Jurassic epeiric carbonate ramp Hazara Basin Lesser Himalaya Pakistan".CARBONATES AND EVAPORITES 36.3(2021):21.
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