Listen to Shanan Peters of the University of Wisconsin-Madison on how he assembled geological maps and columns globally on a single platform. He explains how this allows us to disentangle the effects of bias from what really happened. #geology #uwmadison #paleontology

New episode just out with Prof. Roberta Rudnick UCSB on the continental crustal composition paradox. Why is continental crust much more silica-rich than its source material? Which of the many hypotheses put forward can explain it? #Geology

A new Geology Bites episode on what we're learning from gem-quality diamonds formed in the deep mantle 650km down. These CLIPPIR gems show clear genetic links to subducted oceanic plates and seem to form from an iron-nickel metallic liquid. #minerals #gems #geology #diamond

Just released Sara Seager Prof. of Planetary Sci Massachusetts Institute of Technology (MIT) on #exoplanet #geology. Amazingly, we're now learning about exoplanet atmospheres and surfaces. Fantastic projects for gravitational lensing are planned and maybe even to visit Alpha Centauri. #geology #exoplanet

New episode with Rufus Catchings of the USGS on pinning down California's faults. Faults act as waveguides, and when energy in one fault carries to another, it suggests they are connected - an potentially much more dangerous! #geology #geophysics #Earthquakes

Just released Prof Adam Simon University of Michigan on metals for Li-ion batteries. Lithium in the electrolyte, copper in the anode, and nickel, cobalt and manganese to catalyze the entry and exit of Li-ions and charge exchange in the cathode. #EnergyStorage for the grid and EVs. #geology

There's a new geological map of Greenland. Listen to the latest episode on how a team at NASA assembled decades of geophysical data to create this map. It reveals new subglacial provinces and networks of long, straight valleys. #geology #NASA #icesheet

Hello, listeners. Three new episodes are the pipeline and I will post about them when they are available. In the meantime, I am migrating from X over to Bluesky where it seems more and more scientifically minded people are hanging out. @geologybites.bsky.social

I just posted Rob Strachan on the Caledonian orogeny. Rob explains this multi-phase three-way continental collision clearly and with a perspective that comes from over 40 years of study on the topic. Having the episode web page handy may be especially helpful here.

I just posted the 100th episode of Geology Bites. Mike Searle returns to talk about the mountain ranges of central Asia — all massive ranges but overshadowed by the Himalaya. Hindu Kush w a 300-km deep seismic zone, Karakoram w a 700-km-long batholith. #geology #tectonics

On to the 2nd century of podcasts with Richard Fortey on deep time. Fossils in the geological record were our first markers along the runway of deep time, providing a structure and language within which our modern conception of deep time emerged. #geology #deeptime #earthscience

Listen to the latest episode on urban geology with Ruth Siddall. Minerals, deformation structures, fossils, and much more are well displayed in buildings, with their polished cut surfaces. #urbangeology #geology #earthscience

Listen to Isabel Montañez on using the late Paleozoic ice age as an analog to present day climate/ice conditions. Using a calibrated model, she can explore outcomes if CO2 rises as expected this century. #climate #geology #earthscience

Was sad to learn that Richard Fortey passed away yesterday. I really loved his books, especially Life and Trilobite. I was lucky to get him on Geology Bites in January talking about Deep Time. He was as eloquent and insightful as always.

What exactly are the golden spikes? In the latest podcast episode, Joeri Witteveen explains the history and philosophy of these unique markers of global stages in the rock record. #geology #EarthScience #Earth #Geoscientist

New episode - Lindy Elkins-Tanton on the origin of Earth's water. Only about 0.02% of the Earth is water, but even that's a puzzle as Earth formed within the snow line where no liquid water would have been present. Isotopic analysis provides the clues to resolve this. #geology

Listen to Vic Baker on megafloods. We find evidence all over the world for these cataclysmic events that, e.g., scoured the landscape in Washington, created the English channel, and filled the Mediterranean. #Geology #earthscience #geomorphology

Just released Mike Hudec of Bureau of Economic Geology on salt tectonics. Amazingly, salt structures can be many tens of kilometers across. And because salt is extremely weak compared to other rocks and minerals, it is the first to deform in the presence of stresses. #geology #tectonics

Listen to Renée Tamblyn on the origin of continents. She raises fascinating questions about the Archean water cycle and the role of geologically-produced H2 in powering the earliest life forms — the archaea.

Just released Andreas Fichtner on the frontiers of seismic imaging. Our images are becoming much sharper— see the episode web page. Really novel is the use of fiber-optic cables to sense seismic waves with unprecedented resolution. #geology #tomography