Ancient bubbles in Pilbara evidence of Earth's 'thinner' atmosphere
Air bubbles trapped in ancient rocks in the Pilbara suggest the Earth's atmosphere was far thinner than previously thought, raising questions about how early Earth stayed warm enough for liquid water to flow 2.7 billion years ago.
Lake Makgadikgadi, 21st Century
First thing first, to get this out of the way, there are two potential sources of the faraway rivers in this scenario: Lakes Chad and Congo, the result of 30 million years of tropical heat, heavy
Grand Canyon Stratigraphy - The Great Unconformity
The Great Unconformity exposed in Grand Canyon separates the Tapeats Sandstone from ancient Proterozoic rocks. The Great Unconformity represents ~1.2 billion years of missing rock record, either due to erosion or non-deposition.
San Andreas Fault & Devil’s Punch Bowl
MOVED TO: My life had been crazy over the past week, so I have a lot of pictures to show you guys! First of all, I went to the San Andreas Fault in Palmdale and Devil’s Punch Bowl with my Geo…