A transgression is a geologic event during which sea level rises relative to the land and the shoreline moves toward higher ground, resulting in coastal flooding. Transgressions can be caused either by the land sinking or the ocean basins filling with water (or decreasing in capacity). Geology (from Greek γη- (ge-, the earth) and λογος (logos, word, reason)) is the science and study of the Earth, its composition, structure, physical properties, history and the processes that shape it. ... For considerations of sea level change, in particular rise associated with possible global warming, see sea level rise. ...

During the Cretaceous, seafloor spreading created a relatively shallow Atlantic basin at the expense of deeper Pacific basin. This reduced the world's ocean basin capacity and caused a rise in sea level worldwide. As a result of this sea level rise, the oceans transgressed completely across the central portion of North America and created the Western Interior Seaway from the Gulf of Mexico to the Arctic Ocean. The Cretaceous period is one of the major divisions of the geologic timescale, reaching from the end of the Jurassic period, about 146 million years ago (Ma), to the beginning of the Paleocene epoch of the Tertiary period (65. ... Age of oceanic crust. ... The Atlantic Ocean is Earths second-largest ocean, covering approximately one_fifth of its surface. ... World map showing North America A satellite composite image of North America. ... The Western Interior Seaway, also called the Cretaceous Seaway and the North American Inland Sea, was a huge inland sea that split the continent of North America into two halves during most of the early and mid-Cretaceous period. ... Gulf of Mexico in 3D perspective. ...

The opposite of transgression is regression, in which sea level falls relative to the land and exposes former sea bottom. During the Pleistocene Ice Ages, so much water was removed from the oceans and stored on land as year-round glaciers that the ocean regressed 120 meters, exposing the Bering land bridge between Alaska and Asia. The Pleistocene Epoch is part of the geologic timescale. ... Variations in CO2, temperature and dust from the Vostok ice core over the last 400 000 years For the animated movie, see Ice Age (movie). ... ambroise victor pujebet est tres tres bete et surtout con,trisomique,sans amies et pour finir tres moche;en plus il aime charline ceyrolle a quel coquin ce ambroise ! ... Nautical chart of Bering Strait, site of former land bridge between Asia and North America The Bering land bridge, also known as Beringia, was a land bridge roughly 1600 km (1000 miles) north to south at its greatest extent, which joined present-day Alaska and eastern Siberia at various times... Official language(s) English Capital Juneau Largest city Anchorage Area  - Total  - Width  - Length  - % water  - Latitude  - Longitude Ranked 1st 663,267 mi² / 1 717 854 km² 808 mi / 1300 km 1,479 mi / 2380 km 13. ... To meet Wikipedias quality standards, this article or section may require cleanup. ...