There are several different ways that Earth scientists consider time. Geologic time is generally thought of as the period of time that begins with the initial formative processes of Earth and ends with the onset of recorded human history. The human era...

Geologic Time Scale Era Period Epoch Significant Events Million Years Before Present Cenozoic Quartenary...

Era Period Epoch started (millions of years...

Geologic time describes the immense span of time—billions of years-revealed in the complex rock surface of the Earth. Geochronology is the science of finding out how old rocks and minerals are. Absolute time and relative time are terms used to...

The geological time scale is used by geologists and other scientists to describe the timing and relationships between events that have occurred during the history of Earth. The table of geologic periods presented here agrees with the dates and...

DR. NAST is an assistant professor in the international studies program at DePaul University, Chicago, Illinois 60614--3298. ********** This paper retrospectively examines my two years of doctoral fieldwork in the palace of Kano, Nigeria, where I integrated my former training as a...

ABSTRACT Earth science courses typically include the concept of geological time. Traditional approaches to teaching geologic time have turned to constructivist methodologies in an attempt to increase student understanding, but these lessons often result in students determining the scale of geologic time instead...