A great place to learn

Article Abstract:

Gem and mineral clubs can provide wonderful educational programs, given the clubs' knowledgeable instructors, state-of-the art equipment and facilities, expert instruction, and peer advice. Among these clubs, the San Francisco Gem and Mineral Society is the most popular and respected across the US.

author: Frazier, Si, Frazier, Ann
Associations, Gem cutting

User Contributions:

Comment about this article or add new information about this topic:

CAPTCHA

Jurassic junction

Article Abstract:

The Altmuhl Valley's limestone terrain in Bavaria has weathered geologic formations and trapped ancient flying insects, twigs of inland trees and flying reptiles into the calcareous mud. These fossils are of paleontological interest and has aroused the interest of many fossil collectors.

author: Frazier, Si, Frazier, Ann
Evaluation, Germany, Geology, Stratigraphic, Stratigraphy, Jurassic period, Paleontology, Stratigraphic, Stratigraphic paleontology

User Contributions:

Comment about this article or add new information about this topic:

CAPTCHA

The great flap

Article Abstract:

The discovery of a feather from the Jurassic period in lithographic slate led to the discovery of the Archaeopteryx. This discovery neatly dovetailed with the theory of natural selection posited by Charles Darwin. The controversy surrounding the bird is presented.

author: Frazier, Si, Frazier, Ann
Archaeopteryx

User Contributions:

Comment about this article or add new information about this topic:

CAPTCHA


subjects list: Discovery and exploration, Fossils, Collections and collecting
This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.