The Isthmus of Panama ( es, Istmo de Panamá), also historically known as the Isthmus of Darien (), is the narrow strip of land that lies between the
Caribbean Sea
The Caribbean Sea ( es, Mar Caribe; french: Mer des Caraïbes; ht, Lanmè Karayib; jam, Kiaribiyan Sii; nl, Caraïbische Zee; pap, Laman Karibe) is a sea of the Atlantic Ocean in the tropics of the Western Hemisphere. It is bounded by Mexico ...
and the
Pacific Ocean
The Pacific Ocean is the largest and deepest of Earth's five oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean (or, depending on definition, to Antarctica) in the south, and is bounded by the contin ...
, linking
North
North is one of the four compass points or cardinal directions. It is the opposite of south and is perpendicular to east and west. ''North'' is a noun, adjective, or adverb indicating direction or geography.
Etymology
The word ''north ...
and
South America
South America is a continent entirely in the Western Hemisphere and mostly in the Southern Hemisphere, with a relatively small portion in the Northern Hemisphere at the northern tip of the continent. It can also be described as the sout ...
. It contains the country of
Panama
Panama ( , ; es, link=no, Panamá ), officially the Republic of Panama ( es, República de Panamá), is a transcontinental country spanning the southern part of North America and the northern part of South America. It is bordered by Co ...
and the
Panama Canal
The Panama Canal ( es, Canal de Panamá, link=no) is an artificial waterway in Panama that connects the Atlantic Ocean with the Pacific Ocean and divides North and South America. The canal cuts across the Isthmus of Panama and is a condui ...
. Like many
isthmus
An isthmus (; ; ) is a narrow piece of land connecting two larger areas across an expanse of water by which they are otherwise separated. A tombolo is an isthmus that consists of a spit or bar, and a strait is the sea counterpart of an isthmus ...
es, it is a location of great geopolitical and strategic importance.
The isthmus is thought to have been formed around 3 million years ago,
separating the
Atlantic
The Atlantic Ocean is the second-largest of the world's five oceans, with an area of about . It covers approximately 20% of Earth's surface and about 29% of its water surface area. It is known to separate the " Old World" of Africa, Europe an ...
and Pacific Oceans and causing the creation of the
Gulf Stream. This was first suggested in 1910 by North American paleontologist
Henry Fairfield Osborn
Henry Fairfield Osborn, Sr. (August 8, 1857 – November 6, 1935) was an American paleontologist, geologist and eugenics advocate. He was the president of the American Museum of Natural History for 25 years and a cofounder of the American Euge ...
. He based the proposal on the fossil record of mammals in Central America. This conclusion provided a foundation for
Alfred Wegener
Alfred Lothar Wegener (; ; 1 November 1880 – November 1930) was a German climatologist, geologist, geophysicist, meteorologist, and polar researcher.
During his lifetime he was primarily known for his achievements in meteorology and ...
when he proposed the theory of
continental drift
Continental drift is the hypothesis that the Earth's continents have moved over geologic time relative to each other, thus appearing to have "drifted" across the ocean bed. The idea of continental drift has been subsumed into the science of pl ...
in 1912.
History
Vasco Núñez de Balboa
Vasco Núñez de Balboa (; c. 1475around January 12–21, 1519) was a Spanish explorer, governor, and conquistador. He is best known for having crossed the Isthmus of Panama to the Pacific Ocean in 1513, becoming the first European to lead an ...
heard of the South Sea from natives while sailing along the Caribbean coast.
On 25 September 1513 his expedition became the first Europeans to see the Pacific Ocean from the Americas. In 1519 the town of Panamá was founded near a small indigenous settlement on the Pacific coast. After the Spanish colonization of
Peru
, image_flag = Flag of Peru.svg
, image_coat = Escudo nacional del Perú.svg
, other_symbol = Great Seal of the State
, other_symbol_type = National seal
, national_motto = "Firm and Happy f ...
, it developed into an important port of trade and became an administrative centre. In 1671 the
Welsh
Welsh may refer to:
Related to Wales
* Welsh, referring or related to Wales
* Welsh language, a Brittonic Celtic language spoken in Wales
* Welsh people
People
* Welsh (surname)
* Sometimes used as a synonym for the ancient Britons (Celtic peop ...
privateer
A privateer is a private person or ship that engages in maritime warfare under a commission of war. Since robbery under arms was a common aspect of seaborne trade, until the early 19th century all merchant ships carried arms. A sovereign or deleg ...
Henry Morgan
Sir Henry Morgan ( cy, Harri Morgan; – 25 August 1688) was a privateer, plantation owner, and, later, Lieutenant Governor of Jamaica. From his base in Port Royal, Jamaica, he raided settlements and shipping on the Spanish Main, becoming we ...
crossed the Isthmus of Panamá from the Caribbean side and destroyed the city. The town was relocated some kilometers to the west at a small peninsula. The ruins of the old town,
Panamá Viejo
Panamá Viejo (English: "Old Panama"), also known as Panamá la Vieja, is the remaining part of the original Panama City, the former capital of Panama, which was destroyed in 1671 by the Welsh privateer Henry Morgan. It is located in the suburbs ...
, are preserved and were declared a
UNESCO World Heritage Site
A World Heritage Site is a landmark or area with legal protection by an international convention administered by the United Nations Educational, Scientific and Cultural Organization (UNESCO). World Heritage Sites are designated by UNESCO for ...
in 1997.
Silver and gold from the
viceroyalty of Peru
The Viceroyalty of Peru ( es, Virreinato del Perú, links=no) was a Spanish imperial provincial administrative district, created in 1542, that originally contained modern-day Peru and most of the Spanish Empire in South America, governed fro ...
were transported overland across the isthmus by
Spanish Silver Train The Spanish Silver Train was an improvised trail used to transport silver from Potosí, Peru across the isthmus of Panama in order to ship it to Spain via the Spanish treasure fleet. The silver was usually unloaded in Panama City, then put in mule ...
to
Porto Bello, where
Spanish treasure fleet
The Spanish treasure fleet, or West Indies Fleet ( es, Flota de Indias, also called silver fleet or plate fleet; from the es, label=Spanish, plata meaning "silver"), was a convoy system of sea routes organized by the Spanish Empire from 1566 to ...
s shipped them to
Seville
Seville (; es, Sevilla, ) is the capital and largest city of the Spanish autonomous community of Andalusia and the province of Seville. It is situated on the lower reaches of the River Guadalquivir, in the southwest of the Iberian Peninsula ...
and
Cádiz
Cádiz (, , ) is a city and port in southwestern Spain. It is the capital of the Province of Cádiz, one of eight that make up the autonomous community of Andalusia.
Cádiz, one of the oldest continuously inhabited cities in Western Europe, ...
from 1707.
Lionel Wafer
Lionel Wafer (1640–1705) was a Welsh explorer, buccaneer and privateer.
A ship's surgeon, Wafer made several voyages to the South Seas and visited Maritime Southeast Asia in 1676. In 1679 he sailed again as a surgeon, soon after settling in ...
spent four years between 1680 and 1684 among the Kuna or
Guna Indians. Scotland tried to establish a settlement in 1698 through the
Darien scheme
The Darien scheme was an unsuccessful attempt, backed largely by investors of the Kingdom of Scotland, to gain wealth and influence by establishing ''New Caledonia'', a colony on the Isthmus of Panama, in the late 1690s. The plan was for the co ...
.
The
California Gold Rush, starting in 1849, brought a large increase in the transportation of people from the Atlantic to the Pacific. Steamships brought gold diggers from eastern US ports, who trekked across the isthmus by foot, horse, and later rail. On the Pacific side, they boarded
Pacific Mail Steamship Company
The Pacific Mail Steamship Company was founded April 18, 1848, as a joint stock company under the laws of the State of New York by a group of New York City merchants. Incorporators included William H. Aspinwall, Edwin Bartlett (American consul ...
vessels headed for
San Francisco
San Francisco (; Spanish for " Saint Francis"), officially the City and County of San Francisco, is the commercial, financial, and cultural center of Northern California. The city proper is the fourth most populous in California and 17th ...
.
Ferdinand de Lesseps
Ferdinand Marie, Comte de Lesseps (; 19 November 1805 – 7 December 1894) was a French diplomat and later developer of the Suez Canal, which in 1869 joined the Mediterranean and Red Seas, substantially reducing sailing distances and times ...
, the developer of the
Suez Canal, started a Panama Canal Company in 1880 that went bankrupt in 1889 in the
Panama scandals
Panama ( , ; es, link=no, Panamá ), officially the Republic of Panama ( es, República de Panamá), is a List of transcontinental countries#North America and South America, transcontinental country spanning the Central America, southern ...
. In 1902–1904, the United States forced
Colombia to grant independence to the
Department of the Isthmus
The Isthmus Department, or Department of Panama ( es, Departamento de Panamá, links=no), was one of the departments of the Republic of Gran Colombia and later of the Republic of Colombia. It was created in 1824 and named after the Isthmus of P ...
, bought the remaining assets of the Panama Canal Company, and
finished the canal in 1914.
Geology
![Isthmus of Panama (closure) - Speciation of marine organisms (w annot)](https://upload.wikimedia.org/wikipedia/commons/c/cf/Isthmus_of_Panama_%28closure%29_-_Speciation_of_marine_organisms_%28w_annot%29.png)
A significant body of water (referred to as the
Central American Seaway) once separated the continents of North and South America, allowing the waters of the Pacific and Atlantic Oceans to mix freely. Beneath the surface, two
plate
Plate may refer to:
Cooking
* Plate (dishware), a broad, mainly flat vessel commonly used to serve food
* Plates, tableware, dishes or dishware used for setting a table, serving food and dining
* Plate, the content of such a plate (for example: ...
s of the
Earth's crust were slowly colliding, forcing the
Cocos Plate
The Cocos Plate is a young oceanic tectonic plate beneath the Pacific Ocean off the west coast of Central America, named for Cocos Island, which rides upon it. The Cocos Plate was created approximately 23 million years ago when the Farallon Plate ...
to slide under the
Caribbean Plate
The Caribbean Plate is a mostly oceanic tectonic plate underlying Central America and the Caribbean Sea off the north coast of South America.
Roughly 3.2 million square kilometers (1.2 million square miles) in area, the Caribbean Plate borders ...
. The pressure and heat caused by this collision led to the formation of underwater
volcano
A volcano is a rupture in the Crust (geology), crust of a Planet#Planetary-mass objects, planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and volcanic gas, gases to escape from a magma chamber below the surface.
On Ear ...
es, some of which grew large enough to form
island
An island (or isle) is an isolated piece of habitat that is surrounded by a dramatically different habitat, such as water. Very small islands such as emergent land features on atolls can be called islets, skerries, cays or keys. An island ...
s. Meanwhile, movement of the two tectonic plates was also pushing up the sea floor, eventually forcing some areas above sea level.
Over time, massive amounts of
sediment
Sediment is a naturally occurring material that is broken down by processes of weathering and erosion, and is subsequently transported by the action of wind, water, or ice or by the force of gravity acting on the particles. For example, sa ...
from North and South America filled the gaps between the newly forming islands. Over millions of years, the sediment deposits added to the islands until the gap was completely filled. By no later than 4.5 million years ago, an isthmus had formed between North and South America. However, an article in
''Science'' magazine stated that
zircon
Zircon () is a mineral belonging to the group of nesosilicates and is a source of the metal zirconium. Its chemical name is zirconium(IV) silicate, and its corresponding chemical formula is Zr SiO4. An empirical formula showing some of t ...
crystals in middle
Miocene
The Miocene ( ) is the first epoch (geology), geological epoch of the Neogene Period and extends from about (Ma). The Miocene was named by Scottish geologist Charles Lyell; the name comes from the Greek words (', "less") and (', "new") and mea ...
bedrock from northern Colombia indicated that by 10 million years ago, it is likely that instead of islands, a full isthmus between the North and South American continents had already formed where the
Central American Seaway had been previously. A genomic study of army ants also tends to confirm that the isthmus emerged millions of years earlier than had long been thought.
Evidence also suggests that the creation of this land mass and the subsequent warm, wet weather over
northern Europe resulted in the formation of a large
Arctic ice cap
The Arctic ice pack is the sea ice cover of the Arctic Ocean and its vicinity. The Arctic ice pack undergoes a regular seasonal cycle in which ice melts in spring and summer, reaches a minimum around mid-September, then increases during fall ...
and contributed to the
current ice age
The Late Cenozoic Ice Age,National Academy of Sciences - The National Academies Press - Continental Glaciation through Geologic Times https://www.nap.edu/read/11798/chapter/8#80 or Antarctic Glaciation began 33.9 million years ago at the Eocen ...
. That warm currents can lead to glacier formation may seem counterintuitive, but heated air flowing over the warm Gulf Stream can hold more moisture. The result is increased precipitation that contributes to snow pack.
The formation of the Isthmus of Panama also played a major role in
biodiversity
Biodiversity or biological diversity is the variety and variability of life on Earth. Biodiversity is a measure of variation at the genetic (''genetic variability''), species (''species diversity''), and ecosystem (''ecosystem diversity'') l ...
on the planet. The bridge made it easier for animals and plants to migrate between the two continents. This event is known in
paleontology
Paleontology (), also spelled palaeontology or palæontology, is the scientific study of life that existed prior to, and sometimes including, the start of the Holocene epoch (roughly 11,700 years before present). It includes the study of fossi ...
as the
Great American Interchange. For instance, in North America, the
opossum,
armadillo, and
porcupine all trace back to ancestors that came across the land bridge from South America. Likewise, bears, cats, dogs, horses, llamas, and raccoons all made the trek south across the isthmus.
Biosphere
As the connecting bridge between two vast land masses, the Panamanian biosphere is filled with overlapping fauna and flora from both North and South America. There are, for example, over 978 species of birds in the isthmus area.
The tropical climate also encourages a myriad of large and brightly colored species, insects, amphibians, birds, fish, and reptiles. Divided along its length by a mountain range, the isthmus's weather is generally wet on the Atlantic (Caribbean) side but has a clearer division into wet and dry seasons on the Pacific side.
See also
*
Darién Gap
The Darién Gap (, , es, Tapón del Darién , ) is a geographic region between the North and South American continents within Central America, consisting of a large watershed, forest, and mountains in Panama's Darién Province and the norther ...
*
Gulf of Darién
*
Isthmo-Colombian Area
The Isthmo-Colombian Area is defined as a cultural area encompassing those territories occupied predominantly by speakers of the Chibchan languages at the time of European contact. It includes portions of the Central American isthmus like eastern E ...
*
Postage stamps and postal history of the Canal Zone
Postage stamps and postal history of the Canal Zone is a subject that covers the postal system, postage stamps used and mail sent to and from the Panama Canal Zone from 1904 up until October 1978, after the United States relinquished its authorit ...
References
Citations
General sources
*
*
**
*
*
* Excerpt from the 1729 Knapton edition
* (Original German article from 1912 with English translation from 2003.)
External links
*
{{DEFAULTSORT:Isthmus of Panama
Geography of Central America
Panama
Panama ( , ; es, link=no, Panamá ), officially the Republic of Panama ( es, República de Panamá), is a transcontinental country spanning the southern part of North America and the northern part of South America. It is bordered by Co ...
Panama
Panama ( , ; es, link=no, Panamá ), officially the Republic of Panama ( es, República de Panamá), is a transcontinental country spanning the southern part of North America and the northern part of South America. It is bordered by Co ...
Landforms of Panama
Natural history of Central America
Regions of Central America