Sedimentary rock is one of the three main rock groups (along with igneous and metamorphic rocks) and is formed in four main ways: by the deposition of the weathered remains of other rocks (known as ...

The Earth continues its journey. Beneath our feet, a tale not everyone knows. On the surface of history we rest. To look into the crust To look into the rock And see the past firmly pressed. Igneous, ...

The trick to a successful search for fossils is finding the proper place. After all, paleontologists rarely select their sites at random. Instead, they consider an assortment of areas — comparing the ...

Proceedings of the Annual Meeting. American Association of Stratigraphic Palynologists Vol. 2, Geoscience and Man, Volume 3. Proceedings of the Second Annual Meeting, October 1969 (1971), pp. 83-92 ...

CHAMPAIGN, Ill. Scientists studying microbial communities and the growth of sedimentary rock at Mammoth Hot Springs in Yellowstone National Park have made a surprising discovery about the geological ...

The Journal of Geology, Vol. 98, No. 4, Chronostratigraphy of Cenozoic Terrestrial Sediments and Faunas (Jul., 1990), pp. 557-566 (10 pages) Fission-track dates from seven volcaniclastic units allow ...