The fascinating, awe inspiring, beer drinking world influenced by the earth's oldest science. This blog is about all things geology. Landmarks, minerals, sedimentary deposition, pretty pictures, and humor all fall into this category.
If you ever have questions dealing with your labs or you homeworks, ask. I will be able to find you the answer if I don't know it off the top of my head.
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OBSIDIAN with CRISTOBALITE. Black obsidian (volcanic glass) with white “snowflake” crystals of the silica mineral, cristobalite. This combination is often referred to as “snowflake obsidian”. Microscope photo taken at 20X.
Zoophycos: international trace fossil of mystery
Zoophycos imprints are found all over the world and their remains date from the Cambrian through to the Holocene epoch. Descriptions of these remains date from the 19th century, and they appear as ribbed, spiral, or fan-shaped structures measuring up to 1.5 metres across. They are some of the most preserved and most common of marine organisms, but they are also the most mysterious. Why? Because while scientists can see that Zoophycos are the remains of burrows, they have no fossilised remains of the creature to verify the kind of behaviours that would generate these burrows.
The creatures that produced Zoophycos fossils lived on the deep-ocean floor, and there are a couple of different ideas as to how they fed. Many examples of the fossil suggest that the animals lived beneath the surface of the ocean floor’s ooze, where they built layers of the burrow along food-rich zones, and through which they stored fecal pellets. Other examples of Zoophycos appear to have been dug by animals that fed atop the surface of the ooze; yet other specimens have tunnels through areas of stored fecal pellets.
Wherever on the ocean floor Zoophycos thrived, these fossils show animal behaviour that suggests the organism was changing its ecosystem in order to deal with a sporadic food supply.
Photo credit: TEL
The Dune of Pilat (French: Dune du Pilat, official name), also called Grande Dune du Pilat) is the tallest sand dune in Europe. It is located in La Teste-de-Buch in the Arcachon Bay area, France, 60 km from Bordeaux.
The dune has a volume of about 60,000,000 m³, measuring around 500 m wide from east to west and 2.7 km in length from north to south. Its height is currently 110 metres above sea level. The dune is a famous tourist destination with more than one million visitors per year.
The dune is considered a foredune, meaning a dune that runs parallel to a shoreline, behind the high tide line of a beach. The dune has been observed to move landward, slowly pushing the forest back to cover houses, roads and portions of the Atlantic Wall. To back this evidence of coastal movement, maps from 1708 and 1786 both place areas with the name Pilat to the south and off-shore of the current dune’s location. The area where the dune currently stands was referred to “Les Sabloneys” or the “New Sands” until the 1930s when it was renamed by real estate developers as the Dune of Pilat. Pilat originates from the Gascon word Pilhar, which refers to a heap or mound.
GeoMythology: Typhon and Zeus
First Installment of GeoMythology
Arches National Park panorama.
#zion #nationalparck #snow #winter #snowcaps #roadtrip #redroad #honeymoon #couplesgetaway #contrast #amazing #geology #CSULAGEOLOGY #COLORADOPLATEAU #REDrock! #ilovetohike #hikenation #backpacking #adventure #adventuretime
Guys, we’re seeing Brian cox. We need an answer for this. Be creative!
Probably another rock with a fossil in it. Or a diamond.
FirstStop;; Cretaceous Edwards Limestone. ⛅️#AustinTx #geology #FossilHunting #ATX
I drive this road everyday now.