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Laurentide ice sheet. The maximum extent of glacial ice in the north polar area during the Pleistocene period included the vast Laurentide ice sheet in eastern North America. The Laurentide ice sheet was a massive sheet of ice that covered millions of square miles, including most of Canada and a large portion of the Northern United States ...
Timeline of glaciation. There have been five or six major ice ages in the history of Earth over the past 3 billion years. The Late Cenozoic Ice Age began 34 million years ago, its latest phase being the Quaternary glaciation, in progress since 2.58 million years ago. Within ice ages, there exist periods of more severe glacial conditions and ...
There are debates on the start date and the periods of Little Ice Age's effects. Most scholars agree on categorizing the Little Ice Age period into three distinct cold periods: in 1458–1552, 1600–1720, and 1840–1880. [80]
The location of the state of Arkansas. Paleontology in Arkansas refers to paleontological research occurring within or conducted by people from the U.S. state of Arkansas. The fossil record of Arkansas spans from the Ordovician to the Eocene. [1] Nearly all of the state's fossils have come from ancient invertebrate life. [1]
Beginning around 11,700 B.C.E., the first indigenous people inhabited the area now known as Arkansas after crossing today's Bering Strait, formerly Beringia. [3] The first people in modern-day Arkansas likely hunted woolly mammoths by running them off cliffs or using Clovis points, and began to fish as major rivers began to thaw towards the end of the last great ice age. [4]
Discovery date: March 4, 2023. David Anderson, who lives in Murfreesboro, found a 3.29-carat brown diamond while wet-sifting soil in March 2023. The diamond was the largest found at the park since ...
The Last Glacial Maximum (LGM), also referred to as the Last Glacial Coldest Period, [1] was the most recent time during the Last Glacial Period where ice sheets were at their greatest extent 26,000 and 20,000 years ago. [2] Ice sheets covered much of Northern North America, Northern Europe, and Asia and profoundly affected Earth 's climate by ...
The geology of Arkansas includes deep 1.4 billion year old igneous crystalline basement rock from the Proterozoic known only from boreholes, overlain by extensive sedimentary rocks and some volcanic rocks. The region was a shallow marine, riverine and coastal environment for much of the early Paleozoic as multi-cellular life became commonplace.