on October 3, 2022
How does quartz form in calcite veins?
Earth scienceAsked by: Chris Follette Under normal temperature-pressure conditions silica / quartz precipitates or dissolves extremely slowly, but at higher pressures and temperatures the kinetics of crystallization are dramatically accelerated. So precipitation of quartz and calcite is actually quite common. How is a quartz vein formed? The simplest type of a quartz vein is the filling
on October 3, 2022
Would oceans regenerate if removed?
Earth scienceAsked by: Debbie Contreras Does the earth make new water? Over millions of years, much of this water is recycled between the inner Earth, the oceans and rivers, and the atmosphere. This cycling process means that freshwater is constantly made available to Earth’s surface where we all live. Volcanoes release massive amounts of water from
on October 3, 2022
Does this optical phenomenon have a name?
Earth scienceAsked by: Jana Kemp What is the name of the optical phenomenon? A halo (ἅλως; also known as a nimbus, icebow or gloriole) is an optical phenomenon produced by the interaction of light from the sun or moon with ice crystals in the atmosphere, resulting in colored or white arcs, rings or spots in the
on October 3, 2022
What is solidus and liquidus temperature of granite?
Earth scienceAsked by: Jana Kemp The liquidus and solidus temperatures are 925-665 C (initial4.5%H2O), 750-630 C. What is solidus and liquidus temperature? Simply put, liquidus is the lowest temperature at which an alloy is completely liquid; solidus is the highest temperature at which an alloy is completely solid. Pure metals are fluid, and they melt at
on October 3, 2022
Volcanic Explosivity Index of Cumbre Vieja eruption
Earth scienceAsked by: Delfeayo Mazatan Is a VEI 9 eruption possible? It is possible that evidence for a VEI 9 eruption exists and is buried in the geologic record. Eruptions that large would be very rare events, but it is impossible to say that eruptions that large have never occurred. What was the last VEI 8
on October 3, 2022
How do we know how much Uranium was in any given sample when it was deposited?
Earth scienceAsked by: Augie Sims How does uranium series dating work? U-Th dating is based on the activity ratios of parent (Uranium) and product (Thorium) isotopes, by calculating the disintegration of the parent to the daughter over time. This is done by the detection (mass spectrometry) of both the parent (234U) and daughter (230Th) products of
on October 3, 2022
Is there a name for a type of algorithm or processing which uses only one source of data as input?
Earth scienceAsked by: Augie Sims What are the 4 types of algorithm? Introduction To Types of Algorithms Brute Force algorithm. Greedy algorithm. Recursive algorithm. Backtracking algorithm. What is an algorithm for processing? An algorithm is a procedure used for solving a problem or performing a computation. Algorithms act as an exact list of instructions that conduct
on October 3, 2022
Creating regular grid for my data?
Earth scienceAsked by: Michelle Lia How do you create a data grid? Creating Data Grids Measure. Supplies the measure values to display in the cells of the data grid. Row. Use a dimension field to define the rows in the data grid, similar to the BY field in a report. Column. Use a dimension to provide
on October 3, 2022
What are some limitations for using meteorites as evidence for the Earth’s age?
Earth scienceAsked by: Michelle Lia How do meteorites tell us about the age of the Earth? Certain “primitive” meteorites contain the first solid material to form in our solar system. Researchers have used the age of this material—4.568 billion years—to determine the age of our solar system. Many primitive meteorites have remained essentially unchanged since they
on October 3, 2022
Global tide calculation
Earth scienceAsked by: Jim Moss How is the tide calculated? The terms of the equation, h = Ho + Sum{ƒH cos[at + (Vo+u) – K]} , are defined as follows: h = height of tide at any time t. Ho = mean height of water level above datum used for prediction. H = mean amplitude of