scholarly journals Lithofacies, Succession, and Their Genetic Interpretation of Lacustrine Gravel Beach-Bars

Lithosphere ◽  
2021 ◽  
Vol 2021 (Special 1) ◽  
Author(s):  
Biao Peng ◽  
Siqi Liu ◽  
Huanyuan Wang ◽  
Yulu Wei ◽  
Lulu Zhang ◽  
...  
Keyword(s):  
Genetic Interpretation ◽  
Sedimentary Succession ◽  
Sand And Gravel ◽  
Important Basis ◽  
Gravel Beach ◽  
Beach Bar ◽  
Lake Basins

Abstract Based on the elaborate dissection of profile sections parallel and vertical with the shoreline and the forming beach-bars, the unique sedimentary succession of gravel beach-bars, “ABC” sequence, has been found, and their lithofacies and origin have been explained. The A interval is composed of poorly sorted sand and gravel, formed in the wave asymmetric zone. The B interval is composed of well-sorted gravel, formed in the breaker zone. The C interval is composed of normally graded sand, formed in the surfing zone. In the actual gravel beach-bars, three intervals are often presented in a variety of combinations, such as “ABCABC,” “BCBCBC,” “ABABAB,” and others. These findings provide an important basis for the identification and distribution prediction of beach-bar reservoirs in the ancient continental lake basins.

scholarly journals Sedimentary succession and recognition marks of lacustrine gravel beach-bars, a case study from the Qinghai Lake, China

2020 ◽  
Vol 12 (1) ◽  
pp. 59-70
Author(s):  
Biao Peng ◽  
Jichang Han ◽  
Xiao Xie ◽  
Luyao Wang
Keyword(s):  
Tibet Plateau ◽  
Qinghai Lake ◽  
Lake Qinghai ◽  
The Past ◽  
Sedimentary Succession ◽  
Plane View ◽  
Qinghai Tibet Plateau ◽  
Gravel Beach ◽  
Beach Bar

AbstractThe present is the key to the past. Based on the dissection of modern beach-bars in the Qinghai Lake, Qinghai-Tibet Plateau, China, including two profiles parallelly to the shoreline, two profiles vertically to the shoreline and one plane-view profile, the sedimentary succession and recognition marks of lacustrine gravel beach-bars have been summarized. Vertically, the lacustrine gravel beach-bars develop with the “ABC” succession. The A interval, the B interval, and the C interval respectively correspond with the gravelly sand facies, the well-sorted gravel facies, and the graded sand facies. The lacustrine gravel beach-bars is composed of several combinations of the “ABC” succession, such as “ABAB”, “ABCABC”, “BCBC”. The main recognition marks of lacustrine gravel beach-bars is the following: the bottom contact is distinct and with the “ABC” succession; and the lacustrine beach-bars develop the swash bedding and sheet-like parallelly to the lakeshore. These viewpoints have significant contributions to the reconstruction of paleoenvironments and paleoshorelines and to the reservoir interpretation within lacustrine beach-bar clastic bodies.

scholarly journals Morpho-sedimentary dynamics of a micro-tidal mixed sand and gravel beach, Playa Granada, southern Spain

2016 ◽  
Vol 379 ◽  
pp. 28-38 ◽  
Author(s):  
Rafael J. Bergillos ◽  
Miguel Ortega-Sánchez ◽  
Gerd Masselink ◽  
Miguel A. Losada
Keyword(s):  
Southern Spain ◽  
Sedimentary Dynamics ◽  
Sand And Gravel ◽  
Gravel Beach

Longshore transport of cobbles on a mixed sand and gravel beach, southern Hawke Bay, New Zealand

2011 ◽  
Vol 287 (1-4) ◽  
pp. 31-42 ◽  
Author(s):  
Mark E. Dickson ◽  
Paul S. Kench ◽  
Michael S. Kantor
Keyword(s):  
New Zealand ◽  
Longshore Transport ◽  
Sand And Gravel ◽  
Gravel Beach

Geography and Bathymetry of Selected Lake Basins, Experimental Lakes Area, Northwestern Ontario

1971 ◽  
Vol 28 (2) ◽  
pp. 139-155 ◽  
Author(s):  
G. J. Brunskill ◽  
D. W. Schindler
Keyword(s):  
Black Spruce ◽  
Soil Depth ◽  
White Birch ◽  
Lake Agassiz ◽  
Preliminary Calculation ◽  
Experimental Lakes Area ◽  
Glacial Ice ◽  
Winnipeg River ◽  
Sand And Gravel ◽  
Lake Basins

The Experimental Lakes Area (ELA) is located at 93°30′–94°00′W and 49°30′–49°45′N at an altitude of 360–380 m above mean sea level. This area is underlain by Precambrian acid granites overlain in some areas by thin glacial drift composed largely of sand and gravel of quartz, plagioclase, and K-feldspar. The area was under glacial ice about 14,000 years B.P. (before present). With the melting of this glacial ice, ELA was situated on the eastern margin of glacial Lake Agassiz. As Lake Agassiz levels receded, the present lake basins were formed. The ELA watersheds now drain into the Winnipeg River, which is in the Hudson Bay drainage system.Mean annual temperatures in the vicinity of ELA are between 0.5 and 2.2 C, and annual precipitation is between 500 and 750 mm. Brunisols were observed over sand deposits in the ELA, but considerable variation in soil types and soil depth were also found. ELA is in a boreal (fire-controlled) subclimax forest of jack pine, black spruce, trembling aspen, and white birch. Aquatic macrophytes were scarce in the littoral zone of ELA lakes. Nearby logging operations and hunting and sport fishing have not influenced the immediate watersheds of ELA lakes.Morphometric maps and measurements are given for 16 lakes in ELA. These lakes vary from 2.5 to 33 m in maximum depth, and from 1.7 to 56 ha in lake surface area. Using estimates of precipitation, evaporation, evapotranspiration, drainage areas, and lake morphometry, a preliminary calculation of theoretical water renewal time is given for these lakes. These values range from 2.6 to 38 years.

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