Frank & Eileen

shale - teaching hand specimen of hard tan shale from the Green River Fm.

Description: If making multiple purchases, please read the note following the red text below! 0 0 0 Teaching hand specimen of a hard tan petroleum source-rock shale from the Green River FormationThe Green River Formation was deposited in a series of lake basins formed as a result of mountain building during the Laramide orogeny, with deposition largely occurring during the Eocene. The lakes alternated from fresh water to saline-alkaline phases and covered a large area in northeastern Utah, southwestern Wyoming and northwestern Colorado. The lithology of the Green River Formation varies widely, in places 33% organic carbon by weight. Typical of the organic-rich shale, the “mahogany layer” of the Parachute Member is technically a kerogen saturated lime mud, though it is referred to as oil shale, and was experimentally mined, primarily in the 1970s, in Parachute Canyon, Colorado, with an eye on its petroleum potential. Costs were high and the potential was unrealized, though Unocal produced five million barrels of oil in their Parachute Canyon plant in the 1950s ‘60s and ‘70s. Near Bonanza, Utah and at Douglas Pass, Colorado, the shale contains prolific fossil plant and insect sites, recording Rocky Mountain vegetation during the early middle Eocene, and providing information about the nature of the ecosystems that surrounded the Eocene lake systems. This shale is durable because of its laminated hydrocarbon-rich nature, allowing preservation of entire branches instead of the single leaves typical of most other fossil leaf localities. This shale was collected near the FAA radar dome at Douglas Pass, in the divide between the Piceance Creek and Uinta basins. It has a leaner organic content than the hydrogen-enriched shale of the Piceance Creek basin immediately to the east. These specimens will fit into a 3.5” x 5.25" specimen tray. We include data with every specimen. Select a specimen:You can select a specimen by telling us what is in front of it - a black mechanical pencil, a silver and black pen, a silver and blue pen, or one of those plus some number of coins, or you can let us make the selection. Making multiple purchases?Just add items to your cart. When finished shopping, click on “request total” at upper right in the Shopping Cart window. Do not proceed to checkout. We will send an eBay invoice with the correct combined shipping. The combined shipping will often be less than eBay shows. Please wait for that invoice before paying. There is no obligation to purchase. You can decide after seeing what shipping will cost.Shipping: Ships in a Priority Mail small flat rate box unless combined with other purchases. We always combine shipping to get your purchase to you at the lowest cost. We do not charge for handling. International customers: We sell and ship internationally. If eBay’s page does not let you enter your country name to determine the shipping cost for something you are interested in, please contact us. We can tell you what the shipping would cost and how to make the purchase. You can then decide if you wish to complete the transaction. Use the Contact Seller link in the Seller Information box on the right side of this page. Pay securely with your debit or credit card through PayPal! You do not need a Pay Pal account to do this. Yes, we do combine shipping!

Price: 8.2 USD

Location: Olancha, California

End Time: 2024-08-26T10:16:37.000Z

Shipping Cost: 8.1 USD

Product Images

shale -  teaching hand specimen of hard tan shale from the Green River Fm.shale -  teaching hand specimen of hard tan shale from the Green River Fm.shale -  teaching hand specimen of hard tan shale from the Green River Fm.shale -  teaching hand specimen of hard tan shale from the Green River Fm.shale -  teaching hand specimen of hard tan shale from the Green River Fm.shale -  teaching hand specimen of hard tan shale from the Green River Fm.shale -  teaching hand specimen of hard tan shale from the Green River Fm.shale -  teaching hand specimen of hard tan shale from the Green River Fm.shale -  teaching hand specimen of hard tan shale from the Green River Fm.shale -  teaching hand specimen of hard tan shale from the Green River Fm.shale -  teaching hand specimen of hard tan shale from the Green River Fm.shale -  teaching hand specimen of hard tan shale from the Green River Fm.

Item Specifics

Return shipping will be paid by: Seller

All returns accepted: Returns Accepted

Item must be returned within: 30 Days

Refund will be given as: Money Back

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