Afghanistan

Central Asia

A world map shows the location of lapis lazuli mining in northeastern Afghanistan, marked by a blue circle with "L I."

Lapis Lazuli Mines

World

USGS

Canada

United States

North America

A map illustrates the distribution of days with heavy fog across North America using a color-coded scheme.

Average annual number of days in North America with heavy fog, where fog has made driving conditions dangerous

Days with Heavy Fog

Areas with 80 days or more of heavy fog are shaded in dark blue, prominently seen in some parts of northern Canada and the western coast of the United States. Regions with 60 days of heavy fog are shaded in purple, visible in some areas of northern Alaska and northeastern Canada, including regions of Victoria Islands, Parry Islands, and Naujaat. Areas experiencing 40 days of heavy fog are shaded in pink, found in parts of extreme eastern Canada, including Ellesmere, the Canadian Arctic Archipelago, Nunavut, and some coastal regions of the northern United States. Regions with 20 days of heavy fog are shaded in orange, noticeable in parts of the western and northeastern United States, and most of the eastern coast, as well as in northern Canada. Areas with 10 days of heavy fog are shaded in yellow, observed in many parts of the United States and Canada including South Dakota, North Dakota, Iowa, Illinois, Kentucky, Tennessee, Dallas, Montana, New York, Calgary, Newfoundland and Labrador, Manitoba, Yellowknife, Northern Territories, Yukon, Fairbanks, Alaska, Nome, Whitehorse, Juneau, New Mexico.

nature

Days

Indian Ocean Ter. (Australia)

Cook Is. (New Zealand)

Niue (New Zealand)

Nauru

Samoa

Kiribati

Palau

French Polynesia (France)

American Samoa (U.S.)

Fiji

Micronesia

Guam (U.S.)

Marshall Is.

Northern Mariana Is. (U.S.)

New Zealand

Papua New Guinea

Solomon Is.

Tuvalu

Australia & Oceania

New Caledonia (France)

Tonga

Vanuatu

Wallis and Futuna Is. (France)

None

A world map shows human occupation. Red areas were settled before 2500 B C E (Australia, New Guinea). Blue areas by 1200 B C E (Fiji, Guam, Samoa). Purple by 200 B C E (Marshall Islands). Orange by 400 C E (Polynesia). Yellow by 800 C E (New Zealand).

Areas of Australia, New Zealand, and Oceanina settled before 2500 BCE, settled by 1200 BCE, settled by 200 BCE, settled by 400 CE, and settled by 800 CE.

Lapis Lazuli Mines	Days with Heavy Fog						Human Occupation
Lapis Lazuli Mines	80 and over	60–79	40–59	20–39	10–19	Under 10	Settled prior to 2500 BCE	Settled by 1200 BCE	Settled by 200 BCE	Settled by 400 CE	Settled by 800 CE
1
	0.102%	0.327%	0.278%	0.465%	0.395%	0.201%
							99.3%	83.2%	31.2%	37.5%	99.1%
								36.0%