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Comparative Systematic Analysis of Proxy to Indicate Younger Dryas Cooling in Late Pleistocene in Sri Lanka

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Abstract

A controversial theory that suggests an extraterrestrial body crashing to Earth almost 12,800 years ago caused the extinction of many large animals and a probable population decline in early humans is gaining traction from research sites around the world. The Younger Dryas Impact Hypothesis, controversial from the time, it was presented in 2007, proposes that an asteroid or comet hit the Earth about 12,800 years ago causing a period of extreme temperature variation that contributed to extinctions many species of megafauna. As focusing study for developing onshore Digital Elevation Model (DEM) to predict paleo sea level drop around 12800 years before present in Sri Lankan coastal based on comparative systematic analysis of proxy to indicate Younger Dryas cooling in late Pleistocene. Model of DEM implement from images of Unmanned Aerial Vehicles (UAV) platform which able to examine the location images of beach rock & eroded cut in an enfield coastal sandy soil along the coastline of Sri Lanka. Resulting of systemic comparison in modern data platform which evaluated from proxy ( pCO2 , SSTMg/Ca, alkalinity), images of UAV in between carbon dating relevant to quaternary research in sri lanka and milankovitch cycle, able to reveled as conclusion, sea level fluctuation (26000ybp ) of 7.5 meters and has been reduced to 2.5 m in Younger Dryas cooling period of late Pleistocene Sri Lanka.
... Considering the redepositing patterns of alluvial soil in Sabaragamuwa beds is quite supportive to make a comparative simulation on Exo-terrestrial landslides (Scaioni et al., 2018;Sumanarathna 2019Sumanarathna , 2020. Therefore, strong climatic fluctuation also occurred during the Pleistocene influences of certain elements in the fauna of Sri Lanka. ...
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The fossils are preserved remains of body parts or traces of ancient organisms. Sri Lanka is a continental island that evolved via unique geological formations, including fossil remains. This island represents many fossils belonging to three different geological periods, for instance: the Jurassic period, Miocene period, and Pleistocene epoch. Most of the Pleistocene fossils were found in terrestrial deposits (alluvial) from the Sabaragamuwa basin called Ratnapura fauna. Thus, our investigations focused on documenting samples of fossils gathered, under the project called “The Paleo World of Sabaragamuwa Basin - Sri Lanka” conducted by Eco Astronomy Inc (Sri Lanka). Considering the geological time scale, we are looking for reporting samples that approximately belong to the Quaternary period. As we know, the Quaternary period of the Earth’s geographic history includes two geologic epochs viz., which are: the Pleistocene (2.58 Myr to 0.0012 Myr), and the Holocene (0.0012 Myr to Present). Both epochs have changed and divided the fauna’s equilibrium and human’s cultural phases based on climate and sea�level fluctuations that took place during these periods. Some of the sections in those epochs has occurred during the last glacial maximum (LGM) and represent the mean sea level was much lower compared with the present records. Therefore, the quaternary period shows the open accessibility to migration of mammalian mega faunal species, that lived during the transition from the Pleistocene to the Holocene epoch. Most probably, the terrestrial climate change has impacted them and caused the extinction of those megafaunas. The gathered data details were synchronized via the technical aspect of sampling photography, toy photography, and virtual reality for analyses and reconstruction purposes.
... Considering the redepositing patterns of alluvial soil in Sabaragamuwa beds is quite supportive to make a comparative simulation on Exo-terrestrial landslides (Scaioni et al., 2018;Sumanarathna 2019Sumanarathna , 2020. Therefore, strong climatic fluctuation also occurred during the Pleistocene influences of certain elements in the fauna of Sri Lanka. ...
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The fossils are preserved remains of body parts or traces of ancient organisms. Sri Lanka is a continental island that evolved via unique geological formations, including fossil remains. This island represents many fossils belonging to three different geological periods, for instance: the Jurassic period, Miocene period, and Pleistocene epoch. Most of the Pleistocene fossils were found in terrestrial deposits (alluvial) from the Sabaragamuwa basin called Ratnapura fauna. Thus, our investigations focused on documenting samples of fossils gathered, under the project called "The Paleo World of Sabaragamuwa Basin-Sri Lanka" conducted by Eco Astronomy Inc (Sri Lanka). Considering the geological time scale, we are looking for reporting samples that approximately belong to the Quaternary period. As we know, the Quaternary period of the Earth's geographic history includes two geologic epochs viz., which are: the Pleistocene (2.58 Myr to 0.0012 Myr), and the Holocene (0.0012 Myr to Present). Both epochs have changed and divided the fauna's equilibrium and human's cultural phases based on climate and sea-level fluctuations that took place during these periods. Some of the sections in those epochs has occurred during the last glacial maximum (LGM) and represent the mean sea level was much lower compared with the present records. Therefore, the quaternary period shows the open accessibility to migration of mammalian mega faunal species, that lived during the transition from the Pleistocene to the Holocene epoch. Most probably, the terrestrial climate change has impacted them and caused the extinction of those megafaunas. The gathered data details were synchronized via the technical aspect of sampling photography, toy photography, and virtual reality for analyses and reconstruction purposes.
... Partially its called bare rock mounds or turtleback shaped inselbergs are scattered in the II -Second Planated Surface ). This kind of Inselbergs (Fig. [23][24][25][26] stood out against the levelling process of nature mainly because they are made of resistant granitic rocks containing large proportions of quartz, one of the most indestructible of rock-forming minerals (Cooray, 1984). ...
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Technical Report
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The knowledge of Martian geology has increased enormously in the last 40 yr. Several missions orbiting or roving Mars have revolutionized our understanding of its evolution and geological features, which in several ways are similar to Earth, but are extremely different in many respects. The impressive dichotomy between the two Martian hemispheres is most likely linked to its impact cratering history, rather than internal dynamics such as on Earth. Mars’ volcanism has been extensive, very longlived and rather constant in its setting. Water was available in large quantities in the distant past of Mars, when a magnetic field and more vigorous tectonics were active. Exogenic forces have been shaping Martian landscapes and have led to a plethora of landscapes shaped by wind, water and ice. Mars’ dynamical behavior continues, with its climatic variation affecting climate and geology until very recent times.
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Technical Report
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