气候变化领域集成服务门户(CCPortal): Sedimentary evolution of middle Jurassic epeiric carbonate ramp Hazara Basin Lesser Himalaya Pakistan

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DOI	10.1007/s13146-021-00713-w
	Sedimentary evolution of middle Jurassic epeiric carbonate ramp Hazara Basin Lesser Himalaya Pakistan
	Khan, Malik Muhammad Saud Sajid; Jadoon, Qasim Ali; Umar, Muhammad; Khan, Ahsan Ali
通讯作者	Umar, M (通讯作者)
发表日期	2021
ISSN	0891-2556
EISSN	1878-5212
卷号	36 期号:3
英文摘要	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	SEA-LEVEL CHANGES SEQUENCE STRATIGRAPHY INDIAN PLATE FACIES SUCCESSION ISLAND LIMESTONES ARGENTINA PATTERNS COASTAL
英文关键词	Lesser Himalaya; Microfacies; Carbonate ramp; Global sea-level; Regional tectonics
语种	英语
WOS研究方向	Geology
WOS类目	Geology
WOS记录号	WOS:000691532800002
来源期刊	CARBONATES AND EVAPORITES
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/260280
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]. 中国科学院青藏高原研究所,2021,36(3).
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).
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).