Skip to Main Content
Skip Nav Destination
GEOREF RECORD

Climatic and tectonic controls of lacustrine hyperpycnite origination in the Late Triassic Ordos Basin, central China; implications for unconventional petroleum development

Yang Renchao, Jin Zhijun, A. J. Tom van Loon, Han Zuozhen and Fan Aiping
Climatic and tectonic controls of lacustrine hyperpycnite origination in the Late Triassic Ordos Basin, central China; implications for unconventional petroleum development
AAPG Bulletin (January 2017) 101 (1): 95-117

Abstract

The Triassic Yanchang Formation contains the main oil-bearing strata in the Ordos Basin, central China. But the sedimentology of the Upper Triassic is still under debate, and flood-generated, hyperpycnal-flow deposits and their implications for unconventional petroleum development have long been overlooked. Our study indicates that hyperpycnites are well developed in the seventh oil member of the Yanchang Formation. They are characterized by couplets of upward-coarsening intervals and upward-fining intervals, separated by microscale erosion surfaces. The origination of hyperpycnal flows was controlled mainly by episodic tectonic movements and the humid climate. The deposits extend from distributary estuaries into the deep lake, have intercalations of dark shales and tuffs, and coexist with debrites and turbidites as a result of the progradation of subaqueous fans. The hyperpycnites have implications for unconventional petroleum reservoirs, because the flows supplied not only large amounts of coarse grains and organic material to the deep-water, fine-grained central lake sediments but also affected the ecosystems, resulting in a higher total organic carbon content in the sediments.


ISSN: 0149-1423
EISSN: 1558-9153
Coden: AABUD2
Serial Title: AAPG Bulletin
Serial Volume: 101
Serial Issue: 1
Title: Climatic and tectonic controls of lacustrine hyperpycnite origination in the Late Triassic Ordos Basin, central China; implications for unconventional petroleum development
Affiliation: Qingdao National Laboratory for Marine Science and Technology, Laboratory for Marine Mineral Resources, Qingdao, China
Pages: 95-117
Published: 201701
Text Language: English
Publisher: American Association of Petroleum Geologists, Tulsa, OK, United States
References: 38
Accession Number: 2017-012054
Categories: Applied geophysicsEconomic geology, geology of energy sourcesStratigraphy
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. sect., strat. col., 2 tables, geol. sketch maps
N34°00'00" - N40°00'00", E106°00'00" - E111°00'00"
Secondary Affiliation: China Petro-Chemical Corporation, CHN, ChinaAdam Mickiewicz University, POL, PolandShandong University of Science and Technology, CHN, China
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from GeoScienceWorld, Alexandria, VA, United States. Reference includes data supplied by American Association of Petroleum Geologists, Tulsa, OK, United States
Update Code: 201709
Close Modal

or Create an Account

Close Modal
Close Modal