Sed's Up! Hang L'ooze
This is the name of a siliciclastic sedimentary rock composed of grain sizes ranging between -2 and -4φ.
What is a pebble conglomerate?
Mechanical disintegration of rocks and minerals into smaller pieces.
What is physical weathering?
A body of rock that is capable of storing and transporting significant quantities of water to a well, spring, or other discharge area.
What is an aquifer?
This type of seismic wave is composed of a backwards-rotating elliptical motion.
What is a Rayleigh Wave?
From 145 to 65 million years ago.
When was the Cretaceous?
The imbrication of these clasts indicates that the current flowed toward this direction.
What is left?
A dark, shiny coating common on rock outcrops and gravel clasts in arid regions. It is the product of oxidation of mafic minerals on the rock surface.
What is desert varnish?
The process by which water absorbed by plants, usually through roots, is evaporated into the atmosphere from the plant surface.
What is Transpiration?
An earthquake that follows closely in time after a larger earthquake and in roughly the same location.
What is an aftershock?
This geologist personally mapped about a quarter of the state of California.
Who is Tom Dibblee?
This is the dominant subsidence mechanism in a retroarc foreland basin.
What is tectonic loading?
The net movement of beach sediment along the coast resulting from oblique wave approach.
What is longshore drift?
The ability of a fluid to flow through a specified media. It embodies the properties of the media only.
What is Permeability?
This law dictates the refraction and reflection of seismic waves along a geologic interface in the subsurface.
What is Snell's Law?
By measuring the rate at which X-rays are given off from an X-ray irradiated target at element-specific wavelengths.
How does XRF (or X-ray fluorescence spectroscopy) work?
This is the likely plate tectonic setting of a sandstone composed of 90% feldspar and 10% quartz clasts.
What is basement uplift?
A characteristic soil horizon with the highest clay content and brightest color.
What is the B horizon?
A geologic material with a relatively low permeability that yields low amounts of groundwater.
What is an Aquitard?
Compressional motion and this pull-down motion of an arriving P-wave is required when visualizing the focal mechanism of an earthquake.
What is dilatational?
2890 to 5150 km below the surface of the Earth.
Where is the outer core?
According to Stokes’ Law (under laminar flow conditions & uniform grain size), increasing the viscosity of a sediment transporting fluid will have this effect on the settling velocity of grains.
What is a lower velocity of settling?
Describes the collective effects of changes in the Earth's movements on its climate over thousands of years. Eccentricity, Obliquity, and Precession
What are the Milankovitch Cycles
This is a special point that is measurable in an aquifer where the total head is equal to the elevation head.
What is the elevation of the groundwater table?
Two different fault motions that can produce exactly the same seismic displacements.
What is a double couple?
Because this mineral can incorporate uranium, but not lead, in its structure during crystallization.
Why is zircon a good mineral to use for radiometric dating?