Mold Fossil: Forms when sediments bury an organism and the sediments change into rock; the organism decays leaving a cavity in the shape of the organism.
Q. What happens if you find dinosaur bones on your property?
If you find a dinosaur fossil on private land, it’s yours to do with as you please. In the United States, the fossilized remains of the mighty creatures that lived in eons past are subject to an age-old law—”finders keepers.” In America, if you find a dinosaur in your backyard, that is now your dinosaur.
Table of Contents
- Q. What happens if you find dinosaur bones on your property?
- Q. When another substance fills in a mold and hardens it forms?
- Q. What happens to insects when they get caught in amber?
- Q. What is relative age?
- Q. What is an example of relative age?
- Q. How do you determine relative age?
- Q. What are the four methods of relative dating?
- Q. Which layer is considered an intrusion?
- Q. What do we call a Downdropped block of the crust bounded by normal faults on each side?
- Q. What do you call the block that moves up relative to the other?
- Q. What type of stress causes a plunging anticline?
- Q. What happens when you push the fault blocks toward each other?
Q. When another substance fills in a mold and hardens it forms?
Fossils also form from molds and casts. If an organism completely dissolves in sedimentary rock, it can leave an impression of its exterior in the rock, called an external mold. If that mold gets filled with other minerals, it becomes a cast.
Q. What happens to insects when they get caught in amber?
Insect in amber Attracted by the resin’s smell as it oozed out of a tree, insects became trapped in the sticky substance and were preserved as the resin hardened. These fossilized insects look as if they were alive yesterday, but they are actually millions of years old.
Q. What is relative age?
Relative age is the age of a rock layer (or the fossils it contains) compared to other layers. It can be determined by looking at the position of rock layers. Absolute age is the numeric age of a layer of rocks or fossils. Absolute age can be determined by using radiometric dating.
Q. What is an example of relative age?
For example, the grains within a sedimentary rock are older than the rock; a fragment of sandstone incorporated within a mudstone is older than the mudstone; a fossil bone found in a limestone is older than the limestone.
Q. How do you determine relative age?
Superposition of rock units is a very simple and straightforward method of relative age determination. The principle states that in a sequence of undeformed sedimentary rocks the oldest beds are at the bottom and the youngest ones are at the top.
Q. What are the four methods of relative dating?
Principles of relative dating
- Uniformitarianism.
- Intrusive relationships.
- Cross-cutting relationships.
- Inclusions and components.
- Original horizontality.
- Superposition.
- Faunal succession.
- Lateral continuity.
Q. Which layer is considered an intrusion?
A layered intrusion is a large sill-like body of igneous rock which exhibits vertical layering or differences in composition and texture.
Q. What do we call a Downdropped block of the crust bounded by normal faults on each side?
grabens
Q. What do you call the block that moves up relative to the other?
A fault is a fracture or zone of fractures between two blocks of rock. Faults allow the blocks to move relative to each other. This movement may occur rapidly, in the form of an earthquake – or may occur slowly, in the form of creep.
Q. What type of stress causes a plunging anticline?
Crustal compression is commonly the response to stress from more than one direction, which causes tilting as well as folding. In crust that has been tilted, folds “plunge” into the earth’s surface.
Q. What happens when you push the fault blocks toward each other?
Answer: 1. When oceanic or continental plates slide past each other in opposite directions, or move in the same direction but at different speeds, a transform fault boundary is formed. No new crust is created or subducted, and no volcanoes form, but earthquakes occur along the fault.
