Sentences with phrase «of ancient sedimentary rock»

Not exact matches

The metals» solubility depends strongly on the amount of oxygen present, so the amount and type of those metals in ancient sedimentary rocks reflect how much oxygen was in the water long ago, when the sediments formed.

The graptolites built many theca together to form a branching structure that then drifted in ancient seas and therefore can be found in sedimentary rocks of a certain vintage all around the world.

Researchers focused on the cycle of sulfur and simulated the patterns in which three different isotopes of sulfur could combine in ancient sedimentary rocks.

Named the Tava sandstone, this sedimentary rock forms intrusions within the ancient granites and gneisses that form the backbone of the Front Range.

The fossil was recovered from sedimentary rock strata that were deposited in an ancient lake roughly 55 million years ago, during the early part of the Eocene epoch.

One of the few things experts all agree on is where to conduct the search: in the three far - flung provinces that host the world's most ancient sedimentary rocks.

«You've got your work cut out if you're looking at the ancient sedimentary rock for microfossils here on Earth — and even more so on Mars,» said the paper's lead author and an associate professor at the University of Kansas, Craig Marshall.

An alluvial fan is a pattern of sedimentary rocks, dirt, and sand deposited by flowing water â $ «in this case, perhaps an ancient Martian river.

These models will have the capability to predict the ancient hydrologic history of a sedimentary basin together with the related processes of organic maturation, hydrocarbon migration, rock alteration, and mineralization.