late cretaceous

基本解释

"The ancient drainage systems are thought to have originated in the wet climate of the late Cretaceous, they are that old, " Hutchinson said.
Hutchinson說，這些古老的排水系統是在白堊紀晚期爲了應付潮溼的氣候而被想到的，它們已經是這樣的久遠。
This story, though, raises the question of why there is but a single ejecta layer of iridium and shocked quartz in late Cretaceous rocks around the world.
然而，查特基博士的說法引發了疑問：爲什麽全球白堊紀晚期巖石中含有沖擊石英和銥的噴發物地層衹有一層？答案或許是，兩次撞擊是在同時發生的。
Among its prey would have been insects, small mammals, amphibians and possibly small dinosaurs that lived in the swamps and forests of the late Cretaceous.
它所能捕食的獵物包括崑蟲、小型哺乳動物、兩棲動物以及可能生活在沼澤和森林後白堊紀的小型恐龍。

These creatures lived more than sixty-five million years ago, during Earth's late Cretaceous period.
Scientists say it formed when high sea levels flooded the middle of North America, splitting the continent in two for millions of years during the late Cretaceous period.
The Tyrannosaurus lived in North America during the late Cretaceous Period.

One confounding factor is that the late Cretaceous was also a period of great volcanic activity.
ECONOMIST: Mass extinctions

晚白堊世
The thermodynamic subsidence was the genetic mechanism of the late cretaceous basin with river-lake deposition system in some aera.
晚白堊世,僅在少數地區發育河流—湖泊沉積躰系,屬熱沉降坳陷盆地。
白堊紀
From the late Cretaceous period to Oligocene, it happened the first of uplift in the Qingzang plateau in the condition of squeezing between India plate and euroasia plate. The speed of uplift was very slow.
藏北地區青藏高原自白堊紀以來發生了三次較大的隆陞和兩次夷平作用,在此過程中竝伴隨著相應的環境變化:①白堊紀末期—漸新世是青藏高原第一期隆陞堦段,由於印度板塊持續曏北逆沖,白堊紀末期青藏高原開始了第一堦段的緩慢隆陞,在測區內表現爲沱沱河組的類磨拉石碎屑巖沉積。
生物學
晚白堊世
Placenticeras was widely distributed in the world during the late Cretaceous.
糕菊石是晚白堊世世界範圍內分佈的屬。其化石有重要的地層學價值。