oceans

#TBT - September 1983 Geotimes

September 1983 cover of Geotimes

The September 1983 issue of Geotimes (now EARTH Magazine) featured a cover with an image celebrating when the Smithsonian Institution put its collection of fossils from the Burgess Shale on display for the first time at the National Museum of Natural History. The caption reads as follows: "This year for the first time, the Smithsonian Institution's National Museum of Natural History has put on display specimens from its unequaled collection of fossils from the Burgess Shale (British Columbia). At the entrance to Dinosaur Hall, a diorama, shown in part of the cover of this issue, recreates the muddy bottom where those creatures lived at the base of an algal reef. A clutch of arthropods (Canadaspis perfecta) crawls up the slope on the right where mud has slumped from the terrace, the fatal weakness that will bury—and preserve—an entire population of Middle Cambrian shallow marine fauna. Sponges cling to the reef face. (photo by Chip Clark, the Smithsonian Institution)"

EarthComm

This website contains resources for teachers, students, and parents, as well as information on the goals and learning approaches EarthComm uses.

EARTH Magazine: Staking a Claim: Deep-Sea Mining Nears Fruition

The existence of seafloor sediments containing valuable minerals and metals has been known since the late 19th century, but it wasn’t until the 1960s that the earliest attempts to recover mineral wealth from the deep sea were made. Technical challenges, as well as discoveries in the 1970s of more economical and previously unknown terrestrial mineral deposits, shelved the idea until the 1990s. Today, the surging demand for rare minerals, driven largely by their use in modern electronics, along with technological advancements and the discovery of mineral-rich seafloor massive sulfides, has now made the high cost of extraction worthwhile.

Pages

Subscribe to RSS - oceans