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originally posted by: onequestion
a reply to: eManym
It starts all the way up in oregon possibly washington state.
The flatness of the valley floor contrasts with the rugged hills or gentle mountains that are typical of most of California's terrain. The valley is thought to have originated below sea level as an offshore area depressed by subduction of the Farallon Plate into a trench further offshore.
The valley was later enclosed by the uplift of the Coast Ranges, with its original outlet into Monterey Bay. Faulting moved the Coast Ranges, and a new outlet developed near what is now San Francisco Bay. Over the millennia, the valley was filled by the sediments of these same ranges, as well as the rising Sierra Nevada to the east; that filling eventually created an extraordinary flatness just barely above sea level;
originally posted by: onequestion
a reply to: Char-Lee
Could there be deeply buried parts of a large object scattered here?
I dont know but i see what your saying. Definitely odd anomaly. I wouldn't doubt there was some ancient leftovers from civilizations way way way back.
now a new study reveals the power and scale of a cataclysmic event some 3.26 billion years ago which is thought to have created geological features found in a South African region known as the Barberton greenstone belt. The Barberton greenstone belt is an area 100 kilometers (62 miles) long and 60 kilometers (37 miles) wide
originally posted by: FyreByrd
a reply to: onequestion
An impact crater would be round (ish) like the gulf of Mexico or the craters you see on the moon.
But elsewhere in our solar system, on planets such as Mercury and bodies such as our moon, craters are very evident.
And they're not always circular, says astronomer Fred Watson.
"Occasionally you see craters that are elongated and sometimes you see canyons that have been excavated by incoming meteorites.
"You even see lines of multi-ringed craters as if something has bounced over the surface, says Watson.
The South Pole-Aitken basin on the Moon is a good example of an elliptical crater. And some scientists argue that a rock the size of Pluto whacked into Mars causing a huge elliptical crater on the planet's north face.