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The sandstone layer is older than the basalt. The older rock cannot be on top of the younger rock. The sandstone and the basalt (or basalt dike) are both deposited at the same depth.
What else can I help you with?
If a mass of granite is in contact with a layer of sandstone that contains small pieces of the granite which rock is older?
The granite would be older because it had to form first in order for the sandstone to contain pieces of it. The sandstone would have formed later on top of the granite layer.
How can you tell the difference between an intrusion and extrusion if there is a layer of sandstone on top?
An intrusion is formed when magma pushes into surrounding rock layers, creating intrusive features like veins or sills, which would be visible beneath the layer of sandstone. In contrast, an extrusion occurs when magma is ejected onto the surface as lava, forming extrusive features like lava flows or volcanic cones above the sandstone layer. The presence of different types of volcanic features would help distinguish between an intrusion and an extrusion in this scenario.
What is oceanic crust and continental crust made of?
Oceanic crust is predominately made of basaltic rock with a thin layer of sedimentary rock on top. Continental crust is predominately made of granitic rock, with a thin layer of sedimentary rock covering much of the visible surface.
Is table mountain a volcanic mountain?
No, Table Mountain in South Africa is not a volcanic mountain. It is made up of sandstone and is considered to be one of the oldest mountains in the world. Its flat top is the result of erosion over millions of years.
Which is harder sandstone shale or limestone?
"The two basic rocks found in the Mammoth Cave area are limestone and sandstone. Limestone is the "soft" rock (more water soluble) that is dissolved more easily by water. Sandstone and shale are the rocks that are on top of the cave. They are "harder" (less water soluble) and don't let the water soak into the cave." http://www.nps.gov/archive/maca/learnhome/cur_k3_cla.htm
How can you tell that the sandstone was not deposited on top of basalt layers?
The sandstone layer is older than the basalt. The older rock cannot be on top of the younger rock. The sandstone and the basalt (or basalt dike) are both deposited at the same depth.
How can you tell that shale was not deposited on top of the basalt layer?
Shale typically forms in calm, water-rich environments, such as lakes or oceans, where fine particles settle slowly. In contrast, basalt is an igneous rock that forms from volcanic activity and generally indicates a more dynamic, high-energy environment. If shale were deposited on top of basalt, there would likely be signs of erosion or an unconformity, as well as a lack of sedimentary features in the shale that would suggest it was laid down in a different, more stable environment. Additionally, the mineral composition and grain size of the shale would differ significantly from that of the underlying basalt.
If a layer of sandstone lies on top of a layer of limestone in which a 300-million-year-old fossil is found and there are no unconformities the layer of sandstone must be .?
The layer of sandstone must be younger than the layer of limestone. Since the limestone contains a 300-million-year-old fossil, it indicates that the limestone is older than 300 million years. Therefore, the sandstone, which lies on top without any unconformities, must have formed after the limestone was deposited.
What is an example of paraconformities?
A paraconformity is a type of unconformity where the rock layers are parallel with no visible erosional surface in between. An example would be a horizontal layer of sandstone deposited on top of another horizontal layer of sandstone with no signs of disturbance or erosion between them.
If a layer of sandstone lies on top of a layer of limestone in which a 300-million-year-old fossil is found and there are no unconformities the layer of sandstone must be what?
The layer of sandstone must be younger than the layer of limestone, which contains the 300-million-year-old fossil. Since there are no unconformities, the sandstone was deposited after the limestone, meaning it formed after the fossilizing event of the limestone layer. Therefore, the sandstone is younger than 300 million years old.
How geologists find out about past climates?
Geologist read the stratigraphic columns that are deposited. We use a term called Facies. Facies are descriptive terms of the rock in which it was deposited and what type of rock it is. A transgressive sequence which would indicate a rising in sea level would be something similar to (bottom to top) sandstone, silt/clay, then a limestone.
How does this cross section indicates that the Stockton sandstone is the oldest rock layer?
In a geological cross-section, the principle of superposition states that in undisturbed sedimentary layers, the oldest layers are at the bottom and the younger layers are deposited on top. If the Stockton sandstone is depicted at the lowest level of the cross-section, it indicates that it was formed first, before the overlying layers. Additionally, if there are no intrusions or significant folding that would disrupt this order, it further supports the conclusion that the Stockton sandstone is the oldest rock layer.
Is the statue of Nelsons column marble?
No, the column is granite, the sculpture on top is sandstone.
Which rock layer was deposited last?
The topmost rock layer is the one that was deposited last, as rock layers are typically deposited in a vertical sequence with the oldest layers at the bottom and the youngest layers at the top.
When sedimentary rock is deposited on top of igneous or metamorphic rock?
Metamorphic
If a mass of granite is in contact with a layer of sandstone that contains small pieces of the granite which rock is older?
The granite would be older because it had to form first in order for the sandstone to contain pieces of it. The sandstone would have formed later on top of the granite layer.
Material used in the construction of qutub minar?
Qutub Minar is made of rad sandstone and white marble: 5 stories are made from red sandstone and the two stories of the top are made from white marble.
