ERTH 2401 Lecture Notes - Lecture 2: Mesozoic, Sea Level Rise, Subduction

• School: Carleton University
• Department: Earth Sciences
• Course: ERTH 2401
• Professor: Claudia Schröder-Adams

Document Summary

Where di(cid:374)osaurs roa(cid:373)ed: dinosaurs lived in an ancient, paleo environment which changed drastically while they roamed which drove their evolution and other contemporary animals. Need to understand geological principles to understand why it changed to the degree it did: alberta badlands, they reflect an ancient environment that was extremely rich in dinosaurs. Anyone can come across bones eroding from the sediments: the different rock beds look different. As a geologist need to look at the various layers, taking a variety of samples and doing a variety of tests on them to try to reconstruct the paleo environment. O(cid:373)eti(cid:373)es get (cid:271)(cid:396)eak th(cid:396)oughs (cid:272)alled (cid:862)o(cid:454) holes(cid:863): deposit sediments which you see in the strata, strata shows lush vegetation during the cretaceous period. In right picture there are (cid:271)loo(cid:373)s (cid:449)hi(cid:272)h a(cid:396)e (cid:272)alled (cid:862)a(cid:374)gio spe(cid:396)(cid:373)s(cid:863) (cid:449)hi(cid:272)h o(cid:374)l(cid:455) (cid:272)a(cid:373)e about during the cretaceous period, never existed during triassic or jurassic periods. In cretaceous period there were shorelines as sea level was high and western.