Eonothem Phanerozoic

Eonothem Phanerozoic - 12/19/11 Eonothem Phanerozoic 1/5

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Unformatted text preview: 12/19/11 Eonothem Phanerozoic 1/5 www2.fiu.edu/Alongoria/gly1101/paleogene.html Ceno]oic: F K10, F K11, F K13,F K14, F K16 Week 12 Ceno]oic Eonothem The divisions of the Ceno]oic DXULQJ WKH 65 PLOOLRQ \HdUV RI WKH Ceno]oic Erathem (dOVR VSHOOHG "CdLQR]RLF "), RU AJH RI MdPPdOV, WKH ZRUOG WRRN RQ LWV PRGHUQ IRUP. iQYHUWHEUdWHV, ILVK, UHSWLOHV HWF ZHUH HVVHQWLdOO\ RI PRGHUQ W\SHV, EXW PdPPdOV, ELUGV, SURWR]Rd dQG IORZHULQJ SOdQWV VWLOO HYROYHG dQG GHYHORSHG GXULQJ WKLV SHULRG. TUdGLWLRQdOO\, WKH CHQR]RLF eUdWKHP ZdV GLYLGHG LQWR WZR YHU\ XQHtXdO SHULRGV, WKH THUWLdU\ (ZKLF K PdGH XS WKH EXON RI WKH CHQR]RLF ), dQG WKH qXdWHUQdU\, ZKLF K LV RQO\ WKH OdVW RQH dQG d KdOI PLOOLRQ \HdUV RU VR. TKH THUWLdU\ LV LQ WXUQ GLYLGHG LQWR pdOHRJHQH dQG nHRJHQH V\VWHPV The Paleogene S\stem LV GLYLGHG LQWR WKUHH sHULHV, WKH pdOHRF HQH, eRF HQH, dQG oOLJRF HQH. DXULQJ WKLV UHOdWLYHO\ VKRUW VSdQ RI WLPH (dERXW dV ORQJ dV WKH TULdVVLF ), WKH F RQWLQHQWV EHJdQ WR WdNH RQ WKHLU SUHVHQW IRUP. gHQHUdO F RROLQJ dQG GU\LQJ EHJdQ EHIRUH WKH HQG RI WKH oOLJRF HQH, EXW ZdV SUREdEO\ QRW d PdmRU IdF WRU XQWLO WKH PLGGOH MLRF HQH. TKH pdOHRJHQH PLJKW EH WKRXJKW RI dV dQ H[WHQVLRQ RI WKH MHVR]RLF -- EXW ZLWK PdPPdOV. The Neogene S\stem WUdGLWLRQdOO\ F RPSULVHG WKH MLRF HQH dQG pOLRF HQH sHULHV. rHF HQW F KdQJHV E\ WKH iCs dSSHdUHG WR HOLPLQdWH WKH qXdWHUQdU\, VR WKdW WKH nHRJHQH LQF OXGHG WKH pOHLVWRF HQH dQG hRORF HQH. Paleogeograph\: Eocene < http://www.scotese.com/newpage9.htm > Middle Miocene < http://www.scotese.com/miocene.htm > Tertiar\ period , QdPH IRU WKH PdmRU SRUWLRQ RI WKH CHQR]RLF HUd, WKH PRVW UHF HQW RI WKH JHRORJLF HUdV (VHH gHRORJLF TLPHVF dOH, WdEOH) IURP dURXQG 26 WR 65 PLOOLRQ \HdUV dJR. TKH QdPH THUWLdU\ ZdV ILUVW dSSOLHG dERXW WKH PLGGOH RI WKH 18WK F HQW. WR d Od\HU RI GHSRVLWV, OdUJHO\ XQF RQVROLGdWHG VHGLPHQWV, JHRORJLF dOO\ \RXQJHU WKdQ, dQG RYHUO\LQJ, F HUWdLQ RWKHU GHSRVLWV WKHQ NQRZQ dV pULPdU\ dQG sHF RQGdU\. ldWHU (F .1830) d IRXUWK GLYLVLRQ, WKH qXdWHUQdU\, ZdV dGGHG. AOWKRXJK WKHVH GLYLVLRQV RI WKH HdUWK'V F UXVW VHHPHG dGHtXdWH IRU WKH UHJLRQ WR ZKLF K WKH GHVLJQdWLRQV ZHUH RULJLQdOO\ dSSOLHG (SdUWV RI WKH AOSV dQG SOdLQV RI iWdO\), ZKHQ WKH VdPH V\VWHP ZdV OdWHU H[WHQGHG WR RWKHU SdUWV RI eXURSH dQG WR APHULF d LW SURYHG WR EH LQdSSOLF dEOH. iW ZdV UHdOL]HG WKdW RQH VF KHPH RI F OdVVLILF dWLRQ F RXOG QRW EH dSSOLHG XQLYHUVdOO\: TKH QdPHV pULPdU\ dQG sHF RQGdU\ ZHUH JHQHUdOO\ dEdQGRQHG; THUWLdU\ dQG qXdWHUQdU\ ZHUH, dQG VWLOO dUH, XVHG, EXW RWKHU JHRORJLF OLWHUdWXUH VXEVWLWXWHV RWKHU QdPHV, LQF OXGLQJ WKH pdOdHRJHQH dQG nHRJHQH. TKH PdLQ GLYLVLRQV RI WKH THUWLdU\ dUH WKH pdOHRF HQH, eRF HQH, oOLJRF HQH, MLRF HQH, dQG pOLRF HQH HSRF KV. 12/19/11 Eonothem Phanerozoic 2/5 www2.fiu.edu/Alongoria/gly1101/paleogene.html Quaternar\ period, younger of the two geologic periods of the Cenozoic era of geologic time (see Geologic Timesc ale, table) from 2 million years ago to the present. Comprising all geologic time from the end of the Tertiary period to the present, it is divided into the Pleistoc ene and Holoc ene, or...
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This note was uploaded on 12/19/2011 for the course HISTORY 1101 taught by Professor Josef.longoria during the Fall '10 term at FIU.

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Eonothem Phanerozoic - 12/19/11 Eonothem Phanerozoic 1/5

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