can someone help me I need a conclusion using this
The Earth is over 4.5 million years old.
The Earth has transitioned from a molten planet to a cooled surface similar to
what we see today.
Continental drift and plate tectonics have moved and shaped the Earth during its
history. This change continues today.
Florida has unique geologic structures that provide great insight into the rock
history found in and under the state of Florida.
Florida has a porous landscape that stems from high susceptibility of limestone to
chemical weathering from rainwater, groundwater, and decaying organic
material.
Earth's surface, including Florida, is built up and torn down by physical &
chemical weathering, erosion & deposition suddenly or over time (thousands and
millions of years).
As an example of this, the highest elevation in Florida 345 feet (105 m) is named
a hill (Britton Hill found in Fort Walton County in the Panhandle) while the fifth
highest at 312 feet (95 m) is named a mountain (Sugarloaf Mountain found in the
Florida Highlands in Lake County, a picture of which is the first image under
Mountains and Hills in the attachment Landform Images). If we accept the not-
unreasonable British definition of a mountain as having an elevation of 2000 feet
(610 m) then Florida has no mountains but rather only hills.
While erosion caused by human activities can strip the land of valuable soil, it is also
responsible for aiding in the development of soil and for allowing such new land
surfaces as deltas to form.
Groundwater usually flows through tiny spaces between individual mineral
grains. Many students have the wrong mental image of groundwater systems --
they frequently picture water flowing in vast underground lakes and rivers. This
is not the case for most of the earth! In most rocks on earth, groundwater fills the
billions of tiny spaces between individual mineral grains or in narrow fractures
within rocks -- a lot like the pore spaces in a sponge. Sinkholes are the rare
exception to this sponge-like groundwater system and they actually do form when
large cavities develop underground. You can use the existence of sinkholes to
help clear up the common misconception by telling students that if groundwater
existed in underground lakes everywhere, we would see sinkholes in a lot more
places.
Water from the atmosphere, surface (rivers, lakes, etc.), and groundwater are all
connected via the hydrologic cycle and get naturally "recycled" over and over
again. Actions people take that impact one of the parts of the system (such as
over-pumping of groundwater) will eventually affect the rest of the system.
Answers
Answer:
Explanation:
When two continental slabs collide, they buckle, and mountain ranges like the Alps or the Himalaya form. Upwelling mantle plumes can sometimes appear beneath continental or oceanic slabs, and this ever-moving center of melting creates chains of volcanoes.
At some point, though, the mantle will cool to such an extent that the slabs can no longer sink into it, and several studies have attempted to predict when this will transpire.
Cheng’s new paper uses mathematical models to estimate how fast the mantle is cooling, based on what we know about the intensity of the planet’s magmatic activity from three billion years ago to now. That, he says, gives us a first-order estimate of when plate tectonics will end.
On the Path to Stillness
When two continental slabs collide, they buckle, and mountain ranges like the Alps or the Himalaya form. Upwelling mantle plumes can sometimes appear beneath continental or oceanic slabs, and this ever-moving center of melting creates chains of volcanoes.
At some point, though, the mantle will cool to such an extent that the slabs can no longer sink into it, and several studies have attempted to predict when this will transpire.
Cheng’s new paper uses mathematical models to estimate how fast the mantle is cooling, based on what we know about the intensity of the planet’s magmatic activity from three billion years ago to now. That, he says, gives us a first-order estimate of when plate tectonics will end.
On the Path to Stillness
Regardless of the precision of this figure, plate tectonics will inevitably perish, says Ken Hudnut, a research geophysicist working with the United States Geological Survey. When that day arrives, it “may well be the end of the world as we know it.”
Earth would likely enter a single lid regime, a completed jigsaw of titanic slabs that will no longer drift or sink. Mountain building will stop, but Earth will still have an atmosphere, so erosion by wind and waves will shave down the mighty peaks to hilly plateaus. Eventually, much of the flattened continents will be underwater.
Subduction zones will no longer exist, so while earthquakes will still happen every now and then, truly earthshattering events above magnitude 7 or so will be consigned to history. At the same time, much of the world’s explosive volcanism would be extinguished—although volcanoes would not be entirely snuffed out.
Mars, a world of failed plate tectonics, did manage to forge some impressive volcanic features, including Olympus Mons, the largest volcano in the solar system. Without moving plates, a long-lived upwelling mantle plume focused plenty of crustal melting on that one single spot.
Regardless of the precision of this figure, plate tectonics will inevitably perish, says Ken Hudnut, a research geophysicist working with the United States Geological Survey. When that day arrives, it “may well be the end of the world as we know it.”
Earth would likely enter a single lid regime, a completed jigsaw of titanic slabs that will no longer drift or sink. Mountain building will stop, but Earth will still have an atmosphere, so erosion by wind and waves will shave down the mighty peaks to hilly plateaus. Eventually, much of the flattened continents will be underwater.
Subduction zones will no longer exist, so while earthquakes will still happen every now and then, truly earthshattering events above magnitude 7 or so will be consigned to history. At the same time, much of the world’s explosive volcanism would be extinguished—although volcanoes would not be entirely snuffed out.
Mars, a world of failed plate tectonics, did manage to forge some impressive volcanic features, including Olympus Mons, the largest volcano in the solar system. Without moving plates, a long-lived upwelling mantle plume focused plenty of crustal melting on that one single spot.