Laramide orogeny tshwm sim los ntawm kwv yees li 70 lab xyoo dhau los mus rau 40 lab xyoo dhau losthaum lub sijhawm uas Farallon oceanic phaj tau subducting sai heev hauv qab ntug dej hiav txwv sab hnub poob ntawm Teb Chaws Asmeskas. Qhov txawv txav ntawm Laramide orogeny yog qhov tseeb tias cov toj roob hauv pes tsim nyob rau lub sijhawm no yog …
Laramide orogeny pib thaum twg thiab nws kav ntev npaum li cas?
Laramide orogeny yog lub sijhawm lub sijhawm ntawm lub roob toj siab nyob rau sab hnub poob North America, uas tau pib thaum Cretaceous lig, 70 txog 80 lab xyoo dhau los, thiab xaus 35 txog 55 lab xyoo dhau los. Lub sijhawm thiab hnub nyoog ntawm qhov pib thiab xaus ntawm orogeny yog qhov tsis sib haum xeeb.
Thaum twg yog Ancestral Rocky roob orogeny?
Lub Pob Zeb Pob Zeb tau hloov pauv thaum lub sijhawm ua haujlwm hnyav ntawm cov phaj tectonic uas ua rau feem ntau ntawm cov toj roob hauv pes rugged ntawm sab hnub poob North America. Laramide orogeny, kwv yees li 80–55 lab xyoo dhau los, yog qhov kawg ntawm peb ntu thiab yog lub luag haujlwm rau tsa lub roob Rocky.
Dab tsi yog qhov Ancestral Rocky roob orogeny?
Cov no hu ua Ancestral Rocky Mountains, thiab nyob rau sab qaum teb New Mexico, Colorado, thiab sab hnub tuaj Utah. … Lub sijhawm thib peb ntawm kev nce roob, hu ua Laramide Orogeny, tsim cov kab tseem ceeb ntawm Pob Zeb Roob, suav nrog ntau thaj tsam Sangre de Cristo, kwv yees li 70-40 lab xyoo.ago.
Yuav ua li cas txhaum yog cuam tshuam nrog Rocky Roob Laramide orogeny theem?
Ntau zaus, Laramide Orogeny tau siv qhov ua ntej ua ntej ntawm cov cheeb tsam rau nws qhov kev txhawb nqa ntawm Archean hauv qab daus pob zeb rau high-angle reverse faults. Laramide-style toj roob hauv pes tau pom feem ntau hauv SW Montana hauv Beartooth, Madison, Tobacco Root, thiab Ruby Ranges.
