scholarly journals Sequence stratigraphic framework and sedimentary model of Shanxi Formation in northeast Zhoukou Depression of the North China Plate

China Geology ◽  
2020 ◽  
Vol 3 (4) ◽  
pp. 575-590
Author(s):  
En-ran Liu ◽  
◽  
Di-shi Shi ◽  
Yan-hong Wang ◽  
Qiu-chen Xu ◽  
...  
Keyword(s):  
North China ◽  
Sequence Stratigraphic ◽  
The North ◽  
Sedimentary Model ◽  
Stratigraphic Framework ◽  
North China Plate

The petrochemistry of the Lower Proterozoic metamorphic rocks from the Dabieshan-Lianyungang area, the southeastern margin of the North China Platform

1991 ◽  
Vol 55 (379) ◽  
pp. 263-276 ◽  
Author(s):  
Sang Longkang
Keyword(s):  
Continental Margin ◽  
North China ◽  
Active Continental Margin ◽  
The South ◽  
North China Platform ◽  
The North ◽  
Lower Proterozoic ◽  
Southeastern Margin ◽  
Tectonic Settings ◽  
North China Plate

AbstractBased on geological studies, 141 rock analyses and 5 trace element analyses of metabasites, the present paper deals with the rock association, chemical features, protolith formation and the original tectonic settings upwards through the Lower Proterozoic metamorphic strata in the Dabieshan-Lianyungang area, in the south-east of the North China Platform. The results of the study indicate that the lower and middle parts of the metamorphic strata comprise terrigenous clastics, phosphoritic and aluminous sedimentary formations which formed under stable continental margin conditions. In the middle-upper part a calc-alkaline volcano-sedimentary formation under the active continental margin was developed. The Lower Proterozoic meta-strata of sedimentary-volcanosedimentary origin from bottom upwards suggest that the tectonic evolution of the south-eastern margin of the North China Platform is a process from stabilization to mobilization. This process suggests a northward subduction of the Yangtze Plate under the North China Plate during the later part of the early Proterozoic.

scholarly journals Biothems: sequence stratigraphic units and their implications for regional tectono-stratigraphic interpretations

1992 ◽  
Vol 6 ◽  
pp. 176-176
Author(s):  
H. R. Lane ◽  
M. W. Frye ◽  
G. D. Couples
Keyword(s):  
North American ◽  
Regional Distribution ◽  
Depositional Environments ◽  
Mississippi Valley ◽  
Basin And Range Province ◽  
Anadarko Basin ◽  
Sequence Stratigraphic ◽  
The North ◽  
Tectonic Events ◽  
Stratigraphic Framework

Biothems are regional wedge- or lens-shaped bodies of strata that are: bounded shelfward or cratonward by paleontologically recognizable unconformities; generally thicken on marine shelves, where they are typically conformable with underlying and overlying biothems; are commonly thinner or represent “starved” sequences further basinward; and in their most basinward extent, are either bounded by biostratigraphically recognizable unconformities or are conformable with underlying and overlying biothems. Biothems are practical units whose definition and degree of refinement are dependent on the quality and availability of biostratigraphic control. As recognized to date, biothems have a logical distribution of faunal and floral components, as well as facies groupings that represent internally consistent and logical sequences of depositional environments. The use of biothems as primary sequence stratigraphic units places the emphasis on relative time in a stratigraphic framework.A west-to-east transect within the North American Mississippian System, which extends from the Basin and Range Province, across the Transcontinental Arch (TA) and into the Anadarko Basin, was constructed to demonstrate the regional distribution and tectono-stratigraphic significance of biothems relative to the axis of the TA. The relationships portrayed on the transect, tied to an understanding of North American Mississippian paleogeography, imply that biothems deposited during relative highstand events on one flank of the TA are time-equivalent to biothems deposited during relative lowstand events on the opposite flank of the TA. This distribution is interpreted to have been controlled by intraplate tectonic events that formed “piano-key” basins along the flanks of the TA. The spatial patterns of these basins are not consistent with published models of basin evolution. A further conclusion is that the lack of transgressive or regressive coincident Mississippian biothems on either flank of the TA suggests that it is inadvisable to impose the Mississippi Valley-derived eustasy curve on western flank depositional sequences.

scholarly journals The Early Quaternary Marine to Terrestrial Transition of the Southeastern Wairarapa, New Zealand

2021 ◽  
Author(s):  
◽  
Sam Winiata Nowland
Keyword(s):  
New Zealand ◽  
Sequence Architecture ◽  
Sequence Stratigraphic ◽  
The North ◽  
Stratigraphic Framework ◽  
Structural Growth ◽  
Formation Type ◽  
Age Limit ◽  
North And South ◽  
Lower Contact

<p>This study examines the final emergence of the southeastern Wairarapa within a sequence stratigraphic framework. New exposures of the Pleistocene marginalmarine Hautotara Formation, and non-marine Te Muna Formation allow facies to be detailed and sequence architecture to be analysed. Cyclicity observed within the facies successions of the Hautotara and Te Muna formations are placed in a series of four motifs. These motifs record 40 kyr glacioeustatic cyclicity superimposed upon the basinward to landward progression of the environments, showing the region shallowing through time. The positions of the top of the Pukenui Limestone and the base of the Hautotara Formation are revised, and are now at the top of the “Pukenui C” - a widespread marker bed, which also removes a historical nomenclatural gap. The recognition of the significance of the coccolith Gephyrocapsa sinuosa within the underlying Pukenui Limestone allows this contact to be dated at 1.73 Ma. The ~1.6 Ma age limit provided by a number of tephra within the lower sediments of the Te Muna Formation allow the ages of the examined formations to be constrained further. The eight 40 ka cycles identified within the Hautotara Formation suggests deposition between 1.73 and 1.42 Ma. The Hautotara - Te Muna Formation is revealed to be diachronous, with the base of the Te Muna Formation type section shown to be much younger, 1.12 Ma, than the 1.58 Ma age of the lower contact observed elsewhere in the region. A series of palaeogeographic reconstructions at 1.73, 1.58 and 1.57 Ma demonstrate how closely related sedimentation patterns are to structural growth, with marginal-marine Hautotara Formation sedimentation persisting in the centre of the study area well after the initiation of Te Muna Formation terrestrial deposition to the north and south of this site.</p>

Characteristics of Devonian extensional magmatic activity in the Jiefangyingzi area, northern margin of the North China Plate

2019 ◽  
Vol 55 (2) ◽  
pp. 1262-1282
Author(s):  
Xing‐An Wang ◽  
Zheng‐Hong Liu ◽  
Shi‐Chao Li ◽  
Xiao‐Jun Jiang
Keyword(s):  
North China ◽  
Magmatic Activity ◽  
Northern Margin ◽  
The North ◽  
North China Plate

Petroleum play of the Lower Cretaceous Alam El Bueib Formation in the El Noor-1X well in the north Western Desert (Egypt): A sequence stratigraphic framework

2020 ◽  
Vol 116 ◽  
pp. 104287
Author(s):  
Walid A. Makled ◽  
Abd El Aziz Abd El Moneim ◽  
Tarek F. Mostafa ◽  
Marwa Z. El Sawy ◽  
Doaa A. Mousa ◽  
...  
Keyword(s):  
Lower Cretaceous ◽  
Western Desert ◽  
Sequence Stratigraphic ◽  
The North ◽  
Stratigraphic Framework ◽  
North Western

U–Pb and Re–Os geochronology of the Haolibao porphyry Mo–Cu deposit, NE China: implications for a Late Permian tectonic setting

2013 ◽  
Vol 150 (6) ◽  
pp. 975-985 ◽  
Author(s):  
QING-DONG ZENG ◽  
YAN SUN ◽  
XIAO-XIA DUAN ◽  
JIAN-MING LIU
Keyword(s):  
North China ◽  
Tectonic Setting ◽  
Magmatic Activity ◽  
Late Permian ◽  
Ne China ◽  
Geochronological Data ◽  
The North ◽  
Intrusive Rocks ◽  
North China Plate ◽  
Age Determinations

AbstractNew geochronological data for the Haolibao porphyry Mo–Cu deposit, NE China, yield Permian crystallization zircon U–Pb ages of 278 ± 5 Ma for granite and 267 ± 10 Ma for the granite porphyry that hosts the Mo–Cu mineralization, and four Re–Os molybdenite ages yield an isochron age of 265 ± 3 Ma. These ages disagree with the previous K–Ar age determinations that suggest a correlation of intrusive rocks of the Haolibao area with the Yanshanian intrusive rocks of Cretaceous age. The mineralizations at the Haolibao area may be related to the tectonic–magmatic activity caused by collisional events between the North China Plate and Mongolian terranes during the Permian. The occurrence of the Haolibao plutonic rocks indicates that the Palaeo-Asian-Mongolian Ocean closed during the Permian along the Xilamulun River suture.

scholarly journals Evaluation and formation model of Cambrian high-quality source rocks in the southeast margin of North China Plate

2020 ◽  
Vol 600 (1) ◽  
pp. 012022
Author(s):  
Shengfei Qin ◽  
Tongshan Wang ◽  
Shizhen Tao
Keyword(s):  
Organic Matter ◽  
Lower Cambrian ◽  
North China ◽  
Benthic Algae ◽  
Source Rocks ◽  
High Quality ◽  
The North ◽  
Southern Margin ◽  
Phosphorus Containing ◽  
North China Plate

Abstract In response to the question of whether effective Cambrian source rocks are developed in the North China Plate, field investigations on the southern margin of North China have been carried out. High-quality marine argillaceous source rocks of continuous thickness of 35 m in the Lower Cambrian were discovered in the south-eastern margin of North China Plate. Phosphorus nodules are common in the source rocks. The TOC is 1.19%∼29.70%, with the average of 7.31%. The organic matter comes from low-level biological algae. Because the carbon isotope of kerogen is relatively more negative, it is judged to be mainly benthic algae. The converted vitrinite reflectance (Ro) from measured bitumen reflectance is 2.24%∼3.45%, which is an over-mature source rock. The Lower Cambrian source rocks in the southern margin of North China occurred under the background of rising sea levels. After the glaciers on the southern margin of the North China Plate melted, the Qinling rift trough developed and the stratum subsidence caused rapid transgression of seawater from southeast to northwest. At this time, algae multiply in large numbers, and after death they accumulate with phosphorus-containing materials to form phosphorus-containing organic matter. Benthic algae mainly live in deep-water shelf not affected by waves and tides. Therefore, the development of source rocks is mainly in the deep water shelf.

Facies shifts in the Ordos Basin (China) along the southern and western margins of the North China Plate as a result of plate tectonics

2022 ◽  
pp. 91-106
Author(s):  
Zuozhen Han ◽  
Xiaohui Jin ◽  
Zhijun Jin ◽  
Renchao Yang ◽  
A.J. (Tom) van Loon ◽  
...  
Keyword(s):  
Plate Tectonics ◽  
North China ◽  
Ordos Basin ◽  
The North ◽  
The Ordos Basin ◽  
North China Plate
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