Gondwana, ancient supercontinent that incorporated present-day South America, Africa, Arabia, Madagascar, India, Australia, and Antarctica. It was fully assembled by Late Precambrian time, some 600 million years ago, and the first stage of its breakup be
a) Map of the Sydney Basin showing the distribution of Permian and Triassic strata. b) Late Permian paleogeographical map of eastern Gondwana with the study area marked immediately to the west of a continental volcanic arc flanking the southeastern margin of Gondwana. At the end of the Permian...
The first and most obvious was that the "continents fit together like a tongue and groove," something that was quite noticeable on any accurate map, Murphy said. Another telltale hint that Earth's continents were all one land mass comes from the geologic record. Coal deposits found in Pennsy...