Refer to the figure below, which shows a lava flow radiometrically dated at 275 my and an igneous dike dated at 185 my. What can be said about the absolute age of the sandstone layer? Sandstone Lava flow Shale Granite Metamorphic rock minimum absolute age my maximum absolute age my

Q: Ancient coral reefs:     can be dated by radiometric decay methods.   are a proxy for ...

A: Coral reefs form an underwater ecosystem characterized by the reef-building processes by corals. The...

Q: Why is it difficult to give exact dimensions for the Galaxy's visible halo?

A:   The galaxy in visible light is strongly affected by interstellar dust and gas in a way that it is ...

Q: what is the most abundant sediment by surface area in oceans? A. Lithogenous B. Cosmogenous C. Bioge...

A: A huge basin, which is generated by divergent plate movement of two or more plates and contains an e...

Q: If a star is 30 parsecs away, what is its observed parallax shift?

A:   The star's distance and its parallax angle is related as d = 1/p where the distance d is measured ...

Q: (Not a writing assignment, just a question) Why does the operation of a solid waste landfill create ...

A:   Most of our waste is toxic. Many of the solid waste contains dangerous substances such as volatile...

Q: What is the straight line distance from the intersection Main and Water to the intersection of Summi...

A: Step 1: Locate the two points of intersection and draw a straight line between them In the map abov...

Q: Explain the difference between the way glaciers and sea ice accumulate ice. What role do ocean curre...

A: Sea ice differs from the way glaciers accumulate because it forms, expands, and melts entirely on an...

Q: what is the most abundant sediment by volume in oceans?A. Lithogenous B. Cosmogenous C. Biogenous D....

A: A huge basin, which is generated by divergent plate movement of two or more plates and contains an e...

Q: what are the most abundant sediment size deposits on the continental shelf?A. Gravel B. Sand C. Silt...

A: Generally, the ocean floor is divided into four main parts that are; Continental shelf, Continental ...

Q: Using the figure above, if Earth orbited this star, how far along the timeline would it get? Part 1 ...

A: tstar = MsunMstar2.5 tsun = 11.52.5 x  11 x 109 years = 3.991 x 109 years  

Q: list 5 ways in which you unnecessarily waste energy during a typical day and how these actions viola...

A: The three principles of environmental sustainability are energy from the sun (solar), diversity of f...

Q: What are sources of sediments? Make a list and give a brief description in your own words.

A:   Sediment is loose, solid material that can be transported and deposited by water, ice, or wind. Th...

Q: Zebra mussel populations are growing explosively in the river systems of the central United States. ...

A: Zebra mussels populations have grown exponentially due to: Predators such as round goby, freshwater...

Q: All of the following are true about fossils fuels EXCEPT:   a They are renewable resources.  b They ...

A:   Coal and petroleum are fossil fuels. Fossil fuels are dead remains of plants and animals. They wer...

Q: 1) The arrangement of sediments deposited by turbidity currents is called: 2) The continental shelf ...

A:   1) The arrangement of sediments deposited by turbidity currents is called turbidite. 2) The contin...

Q: If you represented Earth's history by a line thatis 0.5 m long I land? cm How long a segment (in mm)...

A: The entire history of the Earth is shown as a line 0.5meter long. The Length of 0.5meter long repres...

Q: What happens to oceanic lithosphere over time, as it ages?

A:   The partial melting of upper mantle rocks causes the less dense magma to rise upward. The rising m...

Q: Which exoplanet do you believe is most earth like?

A: Earth has the following characteristics an oval-shaped, elliptical orbit, the density of 5.5 g/cm3,...

Q: The distance between two continental shelves of the eastern coast of Greenland and the western coast...

A: Given, The distance between the two continental shelves of eastern coast of Greenland and the wester...

Q: What is the elevation at the corner of Lake St. and Willow St.?

A: Locate the point of intersection between Lake St and Willow St. On the map, the green circle with a...

Q: Charcoal from an ancient campfire has a ratio of 14C to 12C that is one-fourth that of new wood. Abo...

A: It takes 5730 years for the initial amount to decay by half. This means that after one-half life the...

Q: An asteroid orbits the Sun in a 2:1 resonance with Jupiter. What is its orbital period (in years)? y...

A: According to Kepler's Third Law, the square of the orbital period (P) of the asteroid is proportiona...

Q: Saline soils can be reclaimed by flushing these soils with clean irrigation water. To reclaim sodic ...

A: Saline soil has high measures of dissolvable salts, as shown by an Electroconductivity > 4dS/m. S...

Q: Jupiter and Saturn vs. Uranus and Neptune: Compare the pairs intheir internal structure, cloud struc...

A: In our solar system, there are 8 planets named Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus,...

Q: You find a rock 7,500 km away from the nearest seafloor spreading center. The plate is spreading at ...

A: Convert km to cm 1 km = 100000 cm 7500 km = 7.5 x 108 cm Calculate time using given distance and spe...

Q: Describe the surface of Saturn

A:   Saturn is a gas giant made up of hydrogen, helium, ammonia, and methane. Thus, it does not have a ...

Q: Why do succulents change colors and revert back to green? How to prevent.

A: The plant, having thick fleshy leaves, thick stems which stores water in it, and extended roots are ...

Q: What is at the intersection of T3N/T2N boundary and R9W/R8W boundary?

A: Step 1: Mark a point at the intersection of T3N/T2N and R9W/R8W boundary The red dot with a black o...

Q: why don't anticlines always appear as hills even though the rocks beneath the surface are folded upw...

A: In terms of structural geology, an anticline is defined as a fold convex upward and has the oldest r...

Q: Biome table

A: A broad area comprises of specific soil, climate, flora and fauna. Two types of area of land compris...

Q: What would be the effect of having the water in Lake Erie remain warm for a longer period of time du...

A: The unusually warm waters, reliable with environmental change patterns ongoing from many years, coul...

Q: The _________ is the thinnest part of earth's structure. It composes only __________  % of Earth's e...

A: The thinnest layer present outside the Earth is known as the crust. It is the topmost part of the li...

Q: When did the Haitian revolution occur

A: Haitian revolution is a revolution that occurred in France by French self-liberated people, and it b...

Q: Based on what you have learned by experimenting with variables in the Glacial Dynamics Simulation, o...

A:   Decrease in precipitation causes glacial thinning which leads to decrease in glacial ice flow rate...