[permalink] [id link]
This sea level drop and the associated unconformity in North America separate the Mississippian subperiod from the Pennsylvanian subperiod.
from
Wikipedia
Some Related Sentences
sea and level
Newest small-boat playground is the Salton Sea, a once-dry desert sinkhole which is now a salty lake 42 miles long and 235 feet below sea level.
Starting from Julian Date 2443144. 5 ( 1 January 1977 00: 00: 00 ), corrections were applied to the output of all participating clocks, so that TAI would correspond to proper time at mean sea level ( the geoid ).
Because the clocks had been on average well above sea level, this meant that TAI slowed down, by about 10 < sup >− 12 </ sup >.
That is true at sea level ; those limits increase with elevation above sea level although in mountainous regions, there is often no direct view of the true horizon.
It lies above sea level on the plateau.
Averaging at least 1. 6 km thick, the ice is so massive that it has depressed the continental bedrock in some areas more than 2. 5 km below sea level ; subglacial lakes of liquid water also occur ( e. g., Lake Vostok ).
In the northern part of this plateau, west of Jackson county, there are about of level highlands from above sea level.
Its surface is gently undulating and has an elevation of about above sea level.
This is crossed by foot-hills and rolling prairies in the central part of the state, where it has a mean elevation of about, becomes lower and more level toward the southwest, and in the extreme south is flat and but slightly elevated above the sea.
The average elevation of the continent approximates closely to above sea level, roughly near to the mean elevation of both North and South America, but considerably less than that of Asia,.
* Above sea level, altitude measurement
The Acropolis is located on a flat-topped rock that rises above sea level in the city of Athens, with a surface area of about 3 hectares.
Celsius conducted many geographical measurements for the Swedish General map, and was one of earliest to note that much of Scandinavia is slowly rising above sea level, a continuous process which has been occurring since the melting of the ice from the latest ice age.
Height above sea level: there is a spot height outside the Market Hall which is 133. 5m ; the bench mark on the side of the neighbouring Town Hall is 441. 10 feet.
Seasonal winds also cause small changes in sea level, of the order of 0. 5 m.
While the latter measures above sea level, the former have both an elevation of about.
Seventy-five percent of the province is mountainous ( more than above sea level ); 60 % is forested ; and only about 5 % is arable.
The terrain is low-lying and sandy: a coral island surrounded by a narrow fringing reef with a depressed central area devoid of a lagoon with its highest point being above sea level.
Its lowest point is the Caribbean Sea and its highest point is Mount Sage at above sea level.
The lowest point is at sea level and the highest is Bukit Pagon ().
Most of central Burkina Faso lies on a savanna plateau, above sea level, with fields, brush, and scattered trees.
sea and drop
Competition from other steamship lines has cut Cunard's share of sea passengers from one-third to one-fourth and this year the line showed a marked drop of profits on the Atlantic run.
The drop from Markovo to the sea is less than.
A global drop in sea level at the end of the Devonian reversed early in the Carboniferous ; this created the widespread epicontinental seas and carbonate deposition of the Mississippian.
A mid-Carboniferous drop in sea level precipitated a major marine extinction, one that hit crinoids and ammonites especially hard.
However, even Walter Alvarez has acknowledged that there were other major changes on Earth even before the impact, such as a drop in sea level and massive volcanic eruptions that produced the Indian Deccan Traps, and these may have contributed to the extinctions.
These layers do not show the tilting and distortion associated with mountain building, therefore, the likeliest explanation is a " regression ", that is, a drop in sea level.
From a depression of below sea level in 1970 it fell to below sea level in 2006, reaching a drop rate of per year.
In March 2008, La Niña caused a drop in sea surface temperatures over Southeast Asia by an amount of 2 ° C.
In many stretches with no coastal plain, the cliffs drop straight to the sea.
A drop in the level of the sea has caused the former Lisan Peninsula to become a land bridge dividing the sea into separate northern and southern basins.
Because the mountains on the east coast drop abruptly to the sea, the plains are even smaller there than on the west coast.
Mean annual temperatures range from to at sea level and drop to an average of in the mountain peaks.
* Eutychianism holds that the human and divine natures of Christ were fused into one new single ( mono ) nature: His human nature was " dissolved like a drop of honey in the sea ".
As described by Eutyches, his human nature was " dissolved like a drop of honey in the sea ", and therefore his nature was really divine.
In some versions, the harpies drop into the sea from exhaustion, and so their pursuers fall as well.
As the winds blow over the ocean, sea surface temperatures drop about 4 ° C ( 7 ° F ), indicating the upwelling.
A relative drop in sea level may leave a lagoon largely dry, while a rise in sea level may let the sea breach or destroy barrier islands, and leave reefs too deep under water to protect the lagoon.
It currently operates a T-bar surface lift and has a vertical drop of, with a summit of above sea level, and its slopes face north and west.
Brundage has a summit elevation of above sea level, and a vertical drop of.
Discipline continued to deteriorate, and Rupert had to intervene personally several times, including defusing one group of mutinous sailors by suddenly dangling the ringleader over the side of his vessel and threatening to drop him into the sea.
0.201 seconds.