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North ‘plaza’ in Cahokia was likely inundated year-round, study finds

Posted on July 21, 2022
North ‘plaza’ in Cahokia was likely inundated year-round, study finds

The ancient North American city of Cahokia had as its focal point a feature now known as Monks Mound, a giant earthwork surrounded on its north, south, east and west by large rectangular open areas. These flat zones, called plazas by archaeologists since the early 1960s, were thought to serve as communal areas that served…

Read More “North ‘plaza’ in Cahokia was likely inundated year-round, study finds” »

Americas, Archaeology, Earth Science, North America

Australia’s first marine Aboriginal archaeological site questioned

Posted on June 21, 2022
Australia’s first marine Aboriginal archaeological site questioned

A new study from The University of Western Australia has challenged earlier claims that Aboriginal stone artifacts discovered off the Pilbara coast in Western Australia represent Australia’s first undisturbed underwater archaeological site. Archaeologists working in the shallow waters off Western Australia[Credit: Jerem Leach, DHSC Project] The original findings were made in a study published in…

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Archaeology, Australia, Earth Science, Underwater Archaeology

Droughts in the sixth century paved the way for Islam

Posted on June 16, 2022
Droughts in the sixth century paved the way for Islam

Extreme dry conditions contributed to the decline of the ancient South Arabian kingdom of Himyar. Researchers from the University of Basel have reported these findings in the journal Stalagmite from the Hoti Cave. Holes are created by sampling for radioactive dating, and scratch marks by sampling for isotope analysis [Credit: Timon Kipfer, University of Basel] On…

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Climate Change, Earth Science, Middle East, Palaeoclimate, Palaeontology, Yemen

Earliest record of wildfires provide insights to Earth’s past vegetation and oxygen levels

Posted on June 13, 2022
Earliest record of wildfires provide insights to Earth’s past vegetation and oxygen levels

While wildfires over recent years have raged across much of the western United States and pose significant hazards to wildlife and local populations, wildfires have been a long-standing part of Earth’s systems without the influence of humans for hundreds of millions of years. Reflected light microscope image of a 430-million-year-old charred Prototaxites from a borehole drilled…

Read More “Earliest record of wildfires provide insights to Earth’s past vegetation and oxygen levels” »

Ancient Environment, Earth Science, Europe, Fossils, Palaeoclimate, Palaeontology

New insights into the interaction of ocean, continent and atmosphere 2.7 billion years ago

Posted on June 13, 2022
New insights into the interaction of ocean, continent and atmosphere 2.7 billion years ago

The Earth is a dynamic planet that has undergone major changes over the many millions of years of its history. In order to recognize and understand these changes and to derive forecasts for the planet’s future, archives are needed that have stored historical information. The Temagami BIF, a rock formation in Ontario, Canada, is such…

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Earth Science, Geology, Palaeoclimate, Palaeontology

Previous hypotheses questioned in origin of dinosaurs in Argentina

Posted on June 9, 2022
Previous hypotheses questioned in origin of dinosaurs in Argentina

A group of researchers from CONICET and the University of Utah demonstrated that during the time of the first dinosaurs, variations in the diversity and abundance of the plant and vertebrate animal species cannot be related to the climatic changes recorded throughout its deposition, in contrast with previous hypotheses. Artist’s reconstruction of the Triassic ecosystem…

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Argentina, Dinosaurs, Earth Science, Fossils, Palaeoclimate, Palaeontology

Discovery of ‘ghost’ fossils reveals plankton resilience to past global warming events

Posted on May 20, 2022
Discovery of ‘ghost’ fossils reveals plankton resilience to past global warming events

An international team of scientists from UCL (University College London), the Swedish Museum of Natural History, Natural History Museum (London) and the University of Florence have found a remarkable type of fossilisation that has remained almost entirely overlooked until now. The images show the impressions of a collapsed cell-wall covering (a coccosphere) on the surface…

Read More “Discovery of ‘ghost’ fossils reveals plankton resilience to past global warming events” »

Ancient Environment, Climate Change, Earth Science, Fossils, Oceans, Palaeoclimate, Palaeontology

Study reveals impact of sea level rise on human groups during Mesolithic and Neolithic periods in Western Mediterranean

Posted on May 19, 2022
Study reveals impact of sea level rise on human groups during Mesolithic and Neolithic periods in Western Mediterranean

A study carried out in the area around the Pego-Oliva Marshland Natural Park, between Valencia and Alicante, reveals how the rise in sea level impacted the human groups that inhabited this area of the Mediterranean coast during the Mesolithic and Neolithic periods. The protected natural area of the Pego-Oliva marshlands [Credit: Asociacion RUVID] The research…

Read More “Study reveals impact of sea level rise on human groups during Mesolithic and Neolithic periods in Western Mediterranean” »

Archaeology, Earth Science, Europe, Southern Europe, Spain, Ticker

Puzzling features deep in Earth’s interior illuminated

Posted on May 19, 2022
Puzzling features deep in Earth’s interior illuminated

New research led by the University of Cambridge is the first to take a detailed image of an unusual pocket of rock at the boundary layer with Earth’s core, some three thousand kilometres beneath the surface. Etna volcano eruption, 12 January 2011 [Credit: gnuckx] The enigmatic area of rock, which is located almost directly beneath…

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Earth Science, Geology, Geophysics, Palaeontology

Algae reveal clues about climate changes over millions of years

Posted on May 13, 2022
Algae reveal clues about climate changes over millions of years

Organisms adjust their cell walls according to environmental conditions such as temperature. Some adaptations involve changes in lipids which may still be preserved long after the rest of the organisms has been degraded. Researchers at the University of Gottingen studied a specific group of lipids called long chain diols which are found in sea sediments…

Read More “Algae reveal clues about climate changes over millions of years” »

Climate Change, Earth Science, Genetics, Oceans, Palaeobiology, Palaeoclimate, Palaeontology

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