How radiometric dating works in general radioactive elements decay gradually into other elements the original element is called the parent and the result of the decay process is called the daughter element.
Permineralization is a process of fossilization that occurs when an organism is buried the empty spaces within an organism spaces filled with liquid or gas during life become filled with mineralrich groundwaterminerals precipitate from the groundwater occupying the empty spaces.
colorado geology photojournals a tribute to colorados physical past and present right trees and snow mark major laramide uplifts in green and white while salmon pink marks the colorado plateau in this truecolor satellite image of colorado and surrounding states courtesy nasa visible earth.
Purpose this work is meant to provide a guide to the freshwater fishes of iran there are no modern keys to this fauna some available books are incomplete or cursory treatments or outdated and the detailed and diverse scientific literature is widely scattered in time languages and journals.
layer gallery browse indianamap layers to explore and learn more about them preview each layer view its metadata or download the layer to use in your desktop gis software.
In 1999 dr raul esperante teamed up with dr leonard brand and others to investigate fossil whales within the pisco formation of perus atacama desert.
Introduction the red cliffs near budleigh salterton are notable for the remarkable budleigh salterton pebble beds of triassic age the permotrias red bed facies of mudstones sandstones and pebbles beds contain many interesting features that have developed in the harsh desert environments of the pangaea supercontinent.