The mudstone from both patches dates back to the same time and place, so they should contain similar amounts of clay minerals. This surprising observation required the researchers, led by Tom Bristow from NASA’s Ames Research Center, to conjure an explanation for the missing clay. Indeed, ancient rocks are known for being repositories of history, but as the new research shows, natural geological processes can undo this record.
To explain what happened, the team posited a scenario in which water leaked down into the clay from a sulfate deposit located directly above. The supersalty brines seeped through grains of sand at the bottom of the former lake and, by doing so, forever changed the mineral-rich layers below.
8-6-2021 (August 6, 2021) is the Snakiest day of the year and it’s also this year’s CircuitPython Day! The day highlights all things CircuitPython and Python on Hardware. See you there!
Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.