A new study uses a paleotidal model to trace the formation of carbon-rich mud deposits over thousands of years.

It also contained rocks known as gabbros, which are coarse-grained igneous rocks. Both of these rocks then chemically reacted with seawater, changing their composition. While this core represents ...

"However, recent analysis of SuperCam data from nearby similar rocks suggests a composition inconsistent with a meteorite origin," NASA wrote. The research team estimates that Skull Hill is a ...

It also contained rocks known as gabbros, which are coarse-grained igneous rocks. Both of these rocks then chemically reacted with seawater, changing their composition. While this core represents an ...