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Tectonic plates are the basic building blocks of the Earth’s lithosphere, its outermost rocky layer. As these large segments of crust slowly move, landmasses and sea expanses are gradually rearranged. The current configuration of tectonic plates shows a tight connection with the architecture of continents: North America is on the North American plate; South America […] The post Are Continents Rooted in Plate Tectonics? appeared first on GeoCurrents.
3 months ago

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More from GeoCurrents

The Myth of Continents Revisited: GeoCurrents YouTube Video

As it has been more than a quarter century since the publication of my book The Myth of Continents (co-written with my wife, Kären Wigen), I have long thought that the topic deserved reconsideration. An opportunity came in May 2025, when I was invited to give a talk in Stanford’s Distinguished Faculty Lecture Series, associated […] The post The Myth of Continents Revisited: GeoCurrents YouTube Video appeared first on GeoCurrents.

2 weeks ago 14 votes
Canadian Provinces and U.S. States Economically Compared

As noted in the previous GeoCurrents post, Alberta is Canada’s most prosperous and economically productive province. But it does have, as might be expected, by the country’s highest cost of living. Although living costs in Alberta are above the national average, they are below those of Ontario, Canada’s most populous province. The major factor is […] The post Canadian Provinces and U.S. States Economically Compared appeared first on GeoCurrents.

a month ago 20 votes
Economic Factors Behind the Alberta Secession Movement in Canada

Several recent GeoCurrents posts have emphasized similarities in the electoral geographies of the United States and Canada. But there are also some major differences, particularly regarding state/province voting patterns and levels of economic development. In the U.S., the wealthiest states tend to favor the left-leaning Democratic Party while the poorest states tend to favor the […] The post Economic Factors Behind the Alberta Secession Movement in Canada appeared first on GeoCurrents.

a month ago 16 votes
Comparing Recent Patterns of Electoral Geography in the United States and Canada (Part 1: State/Province Level)

Comparing electoral maps of Canada and the United States is a challenging exercise. The two countries have markedly different political systems: the United States is a presidential democratic republic and Canada is a nominally monarchical state governed through a Westminster-style parliamentary democracy. Although both counties are organized as federal rather than unitary states, the individual […] The post Comparing Recent Patterns of Electoral Geography in the United States and Canada (Part 1: State/Province Level) appeared first on GeoCurrents.

a month ago 20 votes
A Major Win for the Left in Canada’s 2025 Election – But Not in Alberta or Saskatchewan

The Conservative Party was widely expected to win Canada’s April 28 federal election. As recently as January 2025, the party was polling well ahead of the governing Liberals (see the graph posted below). But after U.S. President Donald Trump began calling Canada the “fifty-first state,” support for the Conservative Party plunged while support for the […] The post A Major Win for the Left in Canada’s 2025 Election – But Not in Alberta or Saskatchewan appeared first on GeoCurrents.

a month ago 25 votes

More in cartography

Ontario, Day 7 (Toronto Orientation)

We left the southern shores of Georgian Bay and I already missed the area. It turned out great even if I knew next to nothing about it before I researched the trip. However, all things come to an end and now I had a better-known part of Ontario to explore. I hadn’t spent any time […] The post Ontario, Day 7 (Toronto Orientation) appeared first on Twelve Mile Circle - An Appreciation of Unusual Places.

11 hours ago 2 votes
A Time Machine for Maps
2 hours ago 1 votes
Ontario, Day 6 (Owen Sound)

Our time along the southern tip of Georgian Bay was quickly drawing to an end but we still had one more destination along the shoreline towards the northwest. But first I took my final early morning stroll through Collingwood before the family woke up. I retraced some of the more memorable routes from earlier in […] The post Ontario, Day 6 (Owen Sound) appeared first on Twelve Mile Circle - An Appreciation of Unusual Places.

2 days ago 3 votes
How Big is it Really?
2 days ago 3 votes
Submission – Official Map: Valley Metro Light Rail and Streetcar, Phoenix, Arizona, 2025

Submitted by a few people—sorry for the delay in getting to this!—including Shameek, who says: Phoenix is opening the new southern light rail extension and splitting the system into two separate lines, so naturally they released a new map! I like some of the ideas in here, especially the downtown inset and treating the streetcar […]

3 days ago 7 votes