- 1 Which of the following rocks would be most likely to contain a fossil?
- 2 What rocks contain fossils?
- 3 Are fossils found in granite or limestone?
- 4 Which of the following rocks would most likely be found on the ocean floor granite?
- 5 What do all rocks have in common?
- 6 What rocks do you look for when fossil hunting?
- 7 Is it legal to collect fossils?
- 8 How do you tell if a rock has a fossil?
- 9 How can you tell if a rock is a fossil?
- 10 What are the types of limestone?
- 11 How old are fossils in limestone?
- 12 What kind of fossils are found in limestone?
- 13 What is the major difference between granite and basalt?
- 14 Is basalt a strong rock?
- 15 Is granite a volcanic?
Which of the following rocks would be most likely to contain a fossil?
Almost all fossils are preserved in sedimentary rock.
What rocks contain fossils?
Limestone is a sedimentary rock made almost entirely of fossils. Fossils are the remains of ancient plants and animals, like an imprint in a rock or actual bones and shells that have turned into rock. Fossils are found in sedimentary rocks and hold the clues to life on Earth long ago.
Are fossils found in granite or limestone?
With time and pressure, these sediments, such as sand, plant debris, or ash, become compressed into rock. Therefore, fossils are found in sedimentary rock, like sandstone, shale, limestone and coal. Igneous rock, like granite and basalt, is formed by molten rock erupting from deep within the earth.
Which of the following rocks would most likely be found on the ocean floor granite?
As it turns out, most of the ocean floor is basalt, and most of the continents are granite.
What do all rocks have in common?
All rocks have temperature in common. Temperature is the factor that determines the composition of these rocks.
What rocks do you look for when fossil hunting?
Fossils are most commonly found within sedimentary rocks due to the favourable conditions of burial and limited alteration through time. Sedimentary rocks form on the Earth’s surface as sediment accumulates in rivers, lakes and on the seafloor in particular.
Is it legal to collect fossils?
fossils and the remains of vertebrate animals (those with a backbone). The US federal land laws forbid any collection of vertebrate fossils without an institutional permit, but allow hobby collection of common invertebrate and plant fossils on most federal land, and even commercial collection of petrified wood.
How do you tell if a rock has a fossil?
Mostly, however, heavy and lightly colored objects are rocks, like flint. Paleontologists also examine the surfaces of potential fossils. If they are smooth and do not have any real texture, they are probably rocks. Even if it is shaped like a bone, if it does not have the right texture then it is probably a rock.
How can you tell if a rock is a fossil?
It is also a good idea to look for signs that the rock contains a fossil before trying to break it, part of a fossil may be visible on the surface of the rock. You can identify the limestone by it’s lighter grey colour and hardness, it should be quite hard to break without a hammer.
What are the types of limestone?
Travertine, tufa, caliche, chalk, sparite, and micrite are all varieties of limestone. Limestone has long fascinated earth scientists because of its rich fossil content. Much knowledge of the Earth’s chronology and development has been derived from the study of fossils embedded in limestone and other carbonate rocks.
How old are fossils in limestone?
The limestone itself cannot be radiometrically dated, so can only be bracketed between the ages of the granite and the pegmatite. The Triceratops dinosaur fossils are approximately 70 million years old, because they are found in shale and siltstone that contain volcanic ash radiometrically dated at 70 million years.
What kind of fossils are found in limestone?
1. Common fossils in the limestone, from left to right: corals, brachiopods, snails, and crinoids. Corals are common in the limestones of the Burren, and are often concentrated at specific levels in the limestone. Corals are still alive today, and form great reefs in shallow tropical waters.
What is the major difference between granite and basalt?
Igneous rocks (Granites). Igneous rocks are formed by the crystallisation of a magma. The difference between granites and basalts is in silica content and their rates of cooling. A basalt is about 53% SiO2, whereas granite is 73%.
Is basalt a strong rock?
Basalt is largely composed of minerals with little resistance to weathering. Hence, basalt as a whole also tends to disintegrate faster than granite and other felsic rock types. Magnetite is one of the most resistant common minerals in basalt and forms the bulk of heavy mineral sands.
Is granite a volcanic?
Granite, the equivalent of its extrusive (volcanic) rock type rhyolite, is a very common type of intrusive igneous rock. It contains more than 68% weight % of silica in composition and is granular and coarse-grained in texture. Granites can be predominantly white, pink, or gray in color, depending on their mineralogy.