Chronostratigraphic correlation uses “Marker Beds” a dated bed, for correlation across distances. The example that was given in class of a Marker Bed used in the Pacific Northwest is the Group of answer choices 7,770 year old Mt. Mazama ash Deschutes Formation Tumalo Tuff 16 myo Grand Ronde Columbia River Basalt Eocene age Roseburg Basalt

Q: Explain why we are facing a global water crisis? List some water resources.

A: Water scarcity or crisis is the absence of new water assets to fulfill the standard water need. Two ...

Q: How would you explain the relationship of life perpetuation with the evolution of life?

A: How would you explain the relationship of life perpetuation with the evolution of life?

Q: Acritarchs, thought to be the remains of resting cysts of Precambrian algae, have been well preserve...

A: Acritarchs, thought to be the remains of resting cysts of Precambrian algae, have been well preserve...

Q: Which of the following statement is NOT true? * Silicon and oxygen combine to form silica tetrahedra...

A: Inside the Earth rocks are constantly being exposed to powers that will generally twist them, bend t...

Q: When might a meteorologist use a global weather map together with a regional weather  map to make pr...

A: Meteorologists use several satellite measure, mathematical model with supercomputers, and personal e...

Q: Cosmic radiation moves through space, but is repelled around earth. How would a field explain this b...

A: Cosmic rays are the harmful rays raised due to solar radiations and electromagnetic radiation which ...

Q: The town of Clarksville is reviewing options for energy with the goal of reducing their production o...

A: The problem of increasing consumption for energy has resulted in more and more dependence of fossil ...

Q: Based on the relationship between ecological communities and evapotranspiration you would expect div...

A: Evapotranspiration is the total evaporation from the land surface and plants. Thus, it includes both...

Q: Carrying Capacity is the number or quantity of people or things that can be conveyed or held by a ve...

A: Growth curves are basically the variation in the total population over a particular period of time. ...

Q: Is continental drift a supported theory? Give 5 examples of evidence to support your answer.

A: Mainland float is the speculation that the Earth's landmasses have moved throughout geologic time co...

Q: 30. Reasons that human populations historically have settled in floodplains include which of the fol...

A: The human settlement in the past history tended to gather near the river. The Indus, Missapottomian,...

Q: How do producers get water in your ecosystem?

A: How do producers get water in your ecosystem? 

Q: 5.Can you see crystal grains in most or all of the rock without using a magnifier?

A:  We’ll answer the first question since the exact one wasn’t specified. Please submit a new question ...

Q: Table 2.1 The Mohs Hardness Scale Mineral Assigned Hardness talc 1 gypsum 2 calcite fluorite apatite...

A: Mohs hardness scale is the scale ranging from 1 to 10. It shows the ability of surface scratch resis...

Q: Changes in the polarity (+/-) of iron minerals on the seafloor helped geologists to conclude that mi...

A: The plates lie on the ductile asthenosphere, which is semi-solid, hence can move slowly due to the i...

Q: Describe five major ocean basins.

A: Oceans are defined as interconnected single continuous bodies of seawater. On the earth, nearly 71 p...

Q: Do you think an oil spill will be particularly dangerous in the summer during August? What will be t...

A: Oil spills are leakage of oil in the area where oil is drilled, used, or transported. Small scale oi...

Q: John Phillips, in 1860, used the idea of sedimentation to estimate Earth's age.  He assumed that app...

A: Different criteria have been used and various factors have been used to determine the age of earth. ...

Q: Could El Niño also have an effect on equatorial upwelling in the Pacific Ocean, besides the effect o...

A: Could El Niño also have an effect on equatorial upwelling in the Pacific Ocean, besides the effect o...

Q: As humans continue to interact with the ocean ecosystem, what are some  tenets or principles for mor...

A:  As humans continue to interact with the ocean ecosystem, what are some tenets or principles for mor...

Q: explain how the occurrence of earthquake promotes the formation of minerals in hydrothermal environm...

A: Earthquake is a natural disaster which happens to take place when there is a sudden movement along t...

Q: Early in the history of the earth when it was still molten, heavy elements sank towards the center f...

A: Earth is our planet which is thought to evolve by the cooling of the hot mass before 4600 million ye...

Q: Answer this for me mate. Much appreciated.

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and s...

Q: Move the words from each category to the "Crust", "Mantle", "Outer Core", "Inner core" to the corre...

A: The study of the propagation of seismic waves through the earth has inferred the depth of the earth ...

Q: Can deposition take place without erosion?

A: Erosion is defined as the process of destruction of the existing rocks and removal of the products f...

Q: Describe the sequence of events that took place to eventually create the land form you see here. Cho...

A: The Klamath Mountain ranges are a harsh and inhabited mountainous region in the western part of the ...

Q: Put these mineral properties into two groups: color, crystal form, fracture, streak, luster, cleavag...

A: Minerals are natural materials with distinct physical and chemical properties. They are available in...