Taxonomy term

october 2017

Benchmarks: October 8, 1871: The deadliest wildfire in American history incinerates Peshtigo, Wisconsin

On Oct. 8, 1871, the Great Chicago Fire burned through 900 hectares of the city, killing as many as 300 people and leaving another 100,000 homeless. More than 17,400 buildings were destroyed and financial losses totaled more than $200 million at the time (equivalent to $3.7 billion in 2016 dollars).

08 Oct 2017

Geologic Column: A masochist hikes through the heather

A hike in the Scottish Highlands can be a delightful sojourn or a miserable plod in the rain.

06 Oct 2017

Solar-powered paint could produce hydrogen for fuel

Split a water molecule, and you get hydrogen and oxygen. Burn that hydrogen as fuel and you get water. This straightforward, pollution-free cycle is part of what makes hydrogen so tantalizing as a potential renewable fuel. Unfortunately, splitting water molecules to generate hydrogen is not currently very energy efficient. In fact, more than 95 percent of hydrogen currently used in industry is produced from fossil fuels, not water.

05 Oct 2017

Getting there and getting around Flagstaff, Arizona

Flagstaff is a two- to three-hour drive from the Phoenix Sky Harbor International Airport (PHX) and a four-hour drive from McCarran International Airport in Las Vegas (LAS). The small but conveniently located Flagstaff Pulliam Airport (FLG) also offers several flights daily to Phoenix.

04 Oct 2017

New method offers improved monitoring of Kilauea

Kilauea Volcano, on Hawaii’s Big Island, has been erupting continuously since 1983, mostly releasing relatively slow-moving lava flows, although rare violent eruptions have occurred. Both explosive and nonexplosive eruptions pose risks to tourists, roughly 2.6 million of whom visit Kilauea annually, as well as to island residents whose safety and property have at times been put in jeopardy by flowing lava.

04 Oct 2017

Travels in Geology: Cones and craters in Flagstaff, Arizona

Few places in the country exhibit as many types of volcanic features — including jagged lava flows, crumbly cinder cones and the remnants of a towering stratovolcano — in as small an area as northern Arizona’s San Francisco Volcanic Field.
04 Oct 2017

Minerals deformed by meteorites reveal age of impact

Researchers have discovered a new way to determine when a meteorite hit Earth, a technique that could not only help scientists date ancient meteorite strikes but also determine when planetary crusts first formed.

03 Oct 2017

Mineral Resource of the Month: Strontium

Two strontium-bearing minerals, celestite (strontium sulfate, SrSO4) and strontianite (strontium carbonate, SrCO3), contain strontium in sufficient quantities to make recovery practical. Celestite occurs much more frequently and is the primary source of the world’s supply of strontium. Celestite occurs as crystals and as massive or fibrous aggregates in sedimentary rocks. It often displays a delicate blue color owing to the presence of impurities. Celestite can occur in bedded evaporite deposits in conjunction with gypsum, anhydrite and halite. It can also occur in cavities within carbonate rocks where it is precipitated from strontium-bearing groundwaters or brines.

02 Oct 2017

Where on Earth? - October 2017

Where on Earth was this picture taken? Use these clues to guess and submit your answer via mail, email or Web by the last day of the month (October 31, 2017).

01 Oct 2017