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Word Origin for Burgess Shale
Words nearby Burgess Shale
How to use Burgess Shale in a sentence
And that may well be what is happening in the Barnett Shale region around, yes, Dallas and Irving.26 Earthquakes Later, Fracking’s Smoking Gun Is in Texas|James Joiner|January 7, 2015|DAILY BEAST
NCIS managed to eavesdrop on phone calls Wright made to his mother, Valerie Burgess.
Calls to Burgess to comment on this story were not returned.
Thanks to the shale revolution, domestic oil production is soaring.
Volcanoes spewed lava and ash, ocean floors were thrust upward, sand and rock and shale settled into slurry.Napa’s Earthquake Is Not The Only Thing Shaking The Vineyards|Clive Irving|August 31, 2014|DAILY BEAST
They learned that many of the mountains were extinct volcanoes and admired the brilliant colored sandstone and shale formations.The Adventure Girls at K Bar O|Clair Blank
They having first in the tavern made Mr. Waith also a burgess, he coming in while we were drinking.Diary of Samuel Pepys, Complete|Samuel Pepys
In another way also the “foreigners” who were members of the Merchant Gild were useful to the burgess-members of it.The Influence and Development of English Gilds|Francis Aiden Hibbert
In 1888, the lovers of racing pinned their faith to the 30-foot class, and Burgess's fame rose higher and higher.Yachting Vol. 2|Various.
The mud afterwards hardens, and becomes a kind of rock known as shale.
Scientific definitions for Burgess Shale
A Closer Look
Animals in the period known as the Cambrian Explosion sported bizarre combinations of legs, spines, segments, and heads found in no present-day animals. Many of these animals became extinct, leaving no descendants, whereas others may have evolved into groups that are familiar to us today. Most of our knowledge about these early life forms comes from the Burgess Shale, a 540-million-year-old formation of black shale discovered in 1909 by Charles Walcott in the Rocky Mountains of British Columbia. The unique process of fossilization that occurred in the Burgess Shale allowed exquisite preservation of these early animals. While in most cases a reaction to oxygen causes the soft parts of animals to rot away prior to fossilization, the Burgess Shale animals were killed instantly by a mudslide deep in the ocean, where there is a lack of oxygen. After burying the animals, the mud hardened into shale, preserving the soft animal parts. At the time of his discovery, Walcott was able to classify the fossils as ancestors of modern animals. The Burgess Shale was reexamined in the mid-1960s, and many new, unknown fossils were found. When Harry Whittington, Derek Briggs, and Simon Conway Morris studied these new fossils in the 1970s and 1980s, they realized that many of them did not fit into the modern classification system. The implication that there were more basic animal forms in the Cambrian Period than there are today shook up traditional ideas about evolution. In 1989 Stephen Jay Gould brought the Burgess Shale to wide public attention with the publication of his book Wonderful Life.
Cultural definitions for Burgess Shale
A famous rock formation in the western Canadian Rockies, containing unusually well-preserved fossil invertebrates of the early Cambrian Period (from about 540 million years ago). The Burgess Shale fossils provide valuable information about the evolution of early life on Earth.