文档介绍：Lesson 2 The How and Where of Petroleum
To understand the origins of oil and gas, where they are most often found, and how we find them, one must first have some knowledge of the Earth itself.
Our Earth, one of the terrestrial, or inner s of the solar system, is thought to be about billion years old.
The Beginnings
Today, there is little specific knowledge of the Earth’s early history, but it is believed that these constituents, which contained solid or nonvolatile molecules, adhered, and bined, condensed, pressed to form the sphere upon which we live.
陆地
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Lesson 2 The How and Where of Petroleum
Geology
To understand the origins of oil and gas, where they are most often found, and how we find them, one must first have some knowledge of
the Earth itself.
Geology is the science of the Earth, position, structure,
and history, and is partly descriptive and partly historical.
As our knowledge has increased, and our scientific tools have grown more sophisticated, other fields of learning such as geophysics, astrophysics, and seismology have all contributed to what we know
about the Earth.
We do know that the Earth is not a static body; it has a record of past and present change. Through time, all its features have been altered
by the interplay of both external and internal forces.
起源
天体物理学
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Most of what we know about the interior of the earth e to us from secondary evidence gathered from studying rocks and minerals, seismic data, heat flow emanating from the Earth, study of the Earth’s gravity and ic fields, parisons with other bodies in our solar system. From all this, it has e apparent that there is a heavy inner core surrounded by an outer core, a lower mantle, an upper mantle,
and finally, a relatively thin crust.(Figure )
Our is approximately 24,900 mi ( km) in circumference around the equator. The surface area prised of approximately % water and % land. Its approximate volume is 260 billion mi3(×1012km3). The