Thursday, March 26, 2020
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Geology Page

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Minerals on Hand
Mineral Researches

Mines in Texas & New Mexico : Mines Where You Can...

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A 3D laser scan of an Ikaria wariootia impression. (Droser Lab/UCR)
Fossils

Ancestor of all animals identified in Australian fossils

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Example coprolites from Rancho La Brea (A) prior to asphalt removal with surrounding sediments, (B) showing intact pellets with plant material, (C) isolated, cleaned pellets. Figure 2, from: Mychajliw et al. 2020. Exceptionally preserved asphaltic coprolites expand the spatiotemporal range of a North American paleoecological proxy. Credit: Carrie Howard
Fossils

Unprecedented preservation of fossil feces from the La Brea Tar Pits

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Dr Daniel Field holding a replica version of the 'Wonderchicken' skull
Dinosaur

Wonderchicken : fossil from the age of dinosaurs reveals origin of...

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Researchers dated ash deposits from this hill, called a koppie in South Africa. The lower part of koppie Loskop exposes strata from before the end-Permian extinction (Palingkloof Member of the Balfour Formation), while the upper part contains layers deposited after the extinction (Katberg Formation). Credit: John Geissman
Paleontology

In Earth’s largest extinction, land die-offs began long before ocean turnover

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The Mawenzi : The Largest Tanzanite rough in the World
Mineral Researches

The Mawenzi : The Largest Tanzanite rough in the World

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This mural was originally made for a recent Royal Ontario Museum exhibit about a fossil ankylosaur named Zuul crurivastator. That fossil is found within a couple of meters stratigraphically/temporally of the site described in this paper. The last author on the study, David Evans, is the dinosaur curator at the Royal Ontario Museum and was also involved in the description of Zuul and design of that exhibit. Credit: Danielle Dufault, Royal Ontario Museum.
Dinosaur

Late cretaceous dinosaur-dominated ecosystem

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Numerous specimens of Kateretidae in a piece of amber from the Institute of Geology and Palaeontology in Nanjing (China). Included are also pollen grains from primitive water lilies. Credit: Georg Oleschinski/Uni Bonn
Fossils

Beetles changed their diet during the Cretaceous period

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Geologists studying rock samples from Baffin Island find lost fragment of continent. Credit: istock
plate tectonics

Geologists find lost fragment of ancient continent in Canada’s North

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Roughly 66 million years ago an asteroid slammed into the Yucatan peninsula. New research shows darkness, not cold, likely drove a mass extinction after the impact. Credit: NASA
Dinosaur

Darkness, not cold, likely responsible for dinosaur-killing extinction

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Blue Quartz
Mineral Researches

Blue Quartz : What is Blue Quartz? How does Blue Quartz...

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Arial view of the Bungle Bungle range, May 2016. Credit: Creative Commons Attribution-Share Alike 4.0 International license. Nichollas Harrison
Earth

How the Bungle Bungles got their stripes

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Fossil rudist bivalves (Vaccinites) from the Al-Hajar Mountains, United Arab Emirates. Credit: Wikipedia, Wilson44691 – Own work, Public Domain
Fossils

Ancient shell shows days were half-hour shorter 70 million years ago

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Earth
Earth

Earth’s Mantle, Not Its Core, May Have Generated Planet’s Early Magnetic...

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The rocks the team analysed are the oldest preserved mantle rocks. They allow us to see into the early history of the Earth as if through a window. Credit: UNSW
Earth

Building blocks for life on Earth arrived much later than we...

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The grey line in the rock, running from the foreground away under the boulder towards the mountains, is one of the shear zones from the study area. Credit: Lucy Campbell
Earth

‘Fossil earthquakes’ offer new insight into seismic activity deep below Earth’s...

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Galleria delle Stalattiti, Corchia Cave. Credit: Linda Tegg
climate

What causes an ice age to end?

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Credit: MARCAN
Aquifer

Under-sea freshwater reserves found near Canterbury

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Japan's risk of giant tsunamis may have grown when the angle of a down-going slab of ocean crust declined. Top: ocean crust (right) slides under continental crust at a steep angle, causing faulting (red lines) in seafloor sediments piled up behind. Bottom: as the angle shallows, stress is transferred to sediments piled onto the continental crust, and faults develop there. Blue dots indicate resulting earthquakes. At left in both images, the change in angle also shifts the region where magma fueling volcanoes is generated, pushing eruptions further inland. Credit: Adapted from Oryan and Buck, Nature Geoscience 2020
Earthquake

Shifts in deep geologic structure may have magnified great 2011 Japan...

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Burmese amber with Oculudentavis skull nearly perfectly preserved inside. Credit: Lida Xing
Amber

Hummingbird : Smallest Known Dinosaur Found in Amber

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