You worked in small groups and as a class to complete the "If Scientists Think. Today's assignment will allow you to compare and contrast your ideas to some of the actual methods scientists used to develop an estimation of the age of the Earth.Following this introduction, there are several links to different sites concerning the methods scientists use to assist them in estimating the age of the Earth.The Jehol Group was originally dated to the Jurassic.However, it has recently been assigned to the Early Cretaceous despite the known equivocal nature of the biostratigraphic evidence that contains dinosauria from the Triassic to the late Cretaceous.
At 80 km depth, rocks will be heated to about _______ degrees Celsius 1. A map of the area is shown in figure 1 with table 1 showing a selection of fauna from the different strata together with revised dating. Map showing the area of coverage of the Jehol Group.Plate Tectonics Lab Assignment After reading the introduction to the Plate tectonic exercises in the manual, complete the questions on a hard copy of this Lab Assignment. (Question A4, Figure 2.7) What happens when the peridotite in point X is heated to 1750 °C? The Early Cretaceous sedimentary layers of the Jehol Group of northeastern China, which includes outcrops in the Liaoning Province, have proved a rich source of fossils with numerous varieties of flora and fauna often found with soft tissue preservation.The Jehol Group consists of the Jiufotang and Yixian formations, which outcrop in southeastern Inner Mongolia, western Liaoning and northern Hebei provinces of China.