Sentences with ERATHEM
Check out our example sentences below to help you understand the context.Sentences
1
"The geologic column is a sum total of all the rock sequences of the world in which the rocks are arranged in order of age, forming a vertical representation of the entire Earth history, called a 'chronological' sequence of rock strata together with the time equivalents of every rock unit or erathem."
2
"The erathem preserved in the Apalachicola River bluffs begins with the fluvial sands and gravels of the Torreya Formation and ends with the river deposits and alluvium."
3
"Each period or recognized geologic time unit has its own distinct erathem, rock series, and system."
4
"In order to determine the boundaries of the time sequence represented by a particular erathem or rock system, it is necessary to have a relatively complete set of fossil assemblages."
5
"Particularly important are the presence of index fossils that signal definitive boundaries of the erathem or system being investigated."
6
"The Cambrian period is defined by the Cambrian system, which in turn is subdivided into three series: the Terreneuvian, Cambrian, and Furongian series and corresponding British and North American erathems."
7
"The Paleozoic era is divided into six erathems, expressed as rock systems: Cambrian, Ordovician, Silurian, Devonian, Mississippian, and Pennsylvanian."
8
"The Jurassic system and its corresponding erathem represent the chapter of Earth's history when dinosaurs ruled the land."
9
"The Carboniferous system, and the corresponding Pennsylvanian and Mississippian erathems, is famous for its extensive coal deposits."
10
"The Triassic erathem contains important fossil records of early dinosaurs and the rise of the first dinosaurs."
11
"The Cretaceous erathem is defined by the Cretaceous system, during which many iconic dinosaurs lived, including Tyrannosaurus rex and Triceratops."
12
"The Permian system and its corresponding erathem mark the end of the Paleozoic era and the beginning of the Mesozoic era."
13
"The Quaternary erathem includes the current Holocene epoch, which represents the most recent period of Earth's history."
14
"The rocks in the Precambrian erathem are very ancient, dating back to the earliest epochs of Earth's history."
15
"The Cenozoic era is divided into three erathems: Paleogene, Neogene, and Quaternary."
16
"The Tertiary erathem was once used to describe the Paleogene and Neogene periods, but has now been replaced by those terms."
17
"The Mesozoic era is characterized by the presence of three erathems: Triassic, Jurassic, and Cretaceous."
18
"The erathem that includes the Silurian and Devonian systems is often referred to as the 'Age of Fishes.'"
19
"The erathem of the Ordovician system is known for its diverse marine invertebrate fossils, including trilobites and brachiopods."
1
"The geologic time scale is divided into eons, eras, periods, and epochs, each characterized by a distinct erathem."
2
"The erathem of the Cretaceous period is known for the presence of dinosaurs."
3
"The erathem of the Cambrian period is marked by the emergence of complex life forms."
4
"Scientists study the fossils found in a specific erathem to understand the Earth's ancient history."
5
"The erathem of the Paleozoic era includes the Devonian and Permian periods."
6
"The erathem of the Mesozoic era is renowned for the dominance of reptiles."
7
"The erathem of the Quarternary period includes the Pleistocene and Holocene epochs."
8
"Geologists use radiometric dating techniques to determine the age of rocks belonging to a particular erathem."
9
"The erathem of the Precambrian eon spans over 4 billion years of Earth's history."
10
"The erathem of the Triassic period witnessed the rise of the first dinosaurs."
