Ok, it is in NW New Mexico, as stated above. The word "shiprock" could be used in an internet search. Likewise, there are some rather impressive radiating "dikes" coming from this thing.
Explain about the dikes. Is this what I see running across the foreground of the photo? Why are they formed?
suzieb,
The radiating dikes can be seen from an aerial view. Fractures in the surrounding area of this central volcanic event, were filled with magma from below and around. Did you search "shiprock"?
Yes, saw that the dikes are the rock(?) that radiate out from the center. It looks so brittle. Do you remember being a kid and having that candy that eroded like that, left similar hard spikey bits....can't remember what the name of it was.
What I read said that these were buried underground and the ground has eroded away from them.....is that right? They look more like they were pushed out of the ground by some event.
Yes, intrusive igneous bodies are such that never reached the surface. So were never buried. Over time these undergound bodies were exposed by millions of years(?) of erosion.
On the other hand, Extrusive igneous acitivity is when magma breaks through the surface and becomes flowing lava, bombs, cinders, ash, and other surface activity stuff.
Ah, got it, intrusive and extrusive. Makes sense. Ya gotta bear with me guys. Hopefully by the end of the year, I will understand something of what everyone is talking about.
Hi everybody. I'm new to this group but not new to the pic posted here. I'm very familiar with this sight. You're getting close to the answer so I won't spoil your fun. Roger's given you all the clues you need to solve this. Let me add one more: what state is between Texas and Arizona? Many people forget there actually is a state between TX and AZ so don't feel bad if you have to take out the old atlas. as they say where I live, "one of our 50 is missing again!"
posted by RBC66
5 months ago
The picture is of Shiprock; in Navajo, "Tse Bit'a'i" (rock with wings). It rises 1800 feet above the high desert plains a dozen miles southwest of the town of Shiprock in the Four Corners area of New Mexico. The name "Shiprock" comes from its resemblance to the prow of a clipper ship. The Navajo name refers to the tradition that their ancestors were brought to the area from the north by the great bird and dwelled on the monolith, coming down only to plant their fields and fetch water. Geologically, it was most likely formed volcanically a couple or three thousand feet below the surface and exposed after millions of years of erosion.
posted by RBC66
4 months ago