Food, Cooking, Picnic, Tailgate, & Backyard Recipes plus more...
BEST Places to Picnic
Custom Search

VA Picnic Guide | Picnic Tips | Recipe of the Day

Geography | Geology | History

Home >> Alan's Picnic Guides >> US Place Names >> VA Place Names

Picnic Menu Ideas & Planning
Picnic Menu Ideas & Planning

1000s of great recipes and picnic menu ideas

 
 

Blue Ridge Mountains

The Blue Ridge Mountains as seen from Blowing Rock, North Carolina.Geology

Most of the rocks that form the Blue Ridge Mountains are ancient granitic charnockites, metamorphosed volcanic formations, and sedimentary limestones.

Recent studies completed by Richard Tollo, a professor and geologist at George Washington University, provide greater insight into the petrologic and geochronologic history of the Blue Ridge basement suites. Modern studies have found that the basement geology of the Blue Ridge is made of compositionally unique gneisses and granitoids, including orthopyroxene-bearing charnockites. Analysis of zircon minerals in the granites completed by John Aleinikoff at the U.S. Geological Survey has provided more detailed emplacement ages.

Many of the features found in the Blue Ridge and documented by Tollo and others have confirmed that the rocks exhibit many similar features in other North American Grenville-age terranes. The lack of a calc-alkaline affinity and zircon ages less than 1,200 Ma suggest that the Blue Ridge is distinct from the Adirondacks, Green Mountains, and possibly the New York-New Jersey Highlands.

The petrologic and geochronologic data suggest that the Blue Ridge basement is a composite orogenic crust that was emplaced during several episodes from a crustal magma source. Field relationships further illustrate that rocks emplaced prior to 1,078-1,064 Ma preserve deformational features. Those emplaced post-1,064 Ma generally have a massive texture and missed the main episode of Mesoproterozoic compression.

The Blue Ridge Mountains began forming during the Silurian Period over 400 million years ago. Approx. 320 mya, North America and Europe collided, pushing the Blue Ridges up higher.

More Picnic Sites

Recipes
Appetizer/Snack
BarBQ-Grilling
Beverages
Bread
Breakfast
Casserole
Cheese
Chili Bowl
Cowboy
Desserts
Eggs
Lunch
Main Dish
Pasta
Penn Dutch
Picnic
Pizza
Pot Pies
Salads
Salsa
Sandwiches
Slow Cooker
Soups-Stews
Veggies-Side Dish
 



Powered by ... All text is available under the terms of the GNU Free Documentation License.
E-mail | AlansKitchen Privacy Policy | Thank you

Contact Us | About Us | Site Map