The 1663 Charlevoix earthquake occurred on February 5 in
New France
New France (french: Nouvelle-France) was the area colonized by France in North America, beginning with the exploration of the Gulf of Saint Lawrence by Jacques Cartier in 1534 and ending with the cession of New France to Great Britain and Spai ...
(now the
Canadian
Canadians (french: Canadiens) are people identified with the country of Canada. This connection may be residential, legal, historical or cultural. For most Canadians, many (or all) of these connections exist and are collectively the source of ...
province of
Quebec
Quebec ( ; )According to the Canadian government, ''Québec'' (with the acute accent) is the official name in Canadian French and ''Quebec'' (without the accent) is the province's official name in Canadian English is one of the thirtee ...
), and was assessed to have a
moment magnitude
The moment magnitude scale (MMS; denoted explicitly with or Mw, and generally implied with use of a single M for magnitude) is a measure of an earthquake's magnitude ("size" or strength) based on its seismic moment. It was defined in a 1979 pape ...
of between 7.3 and 7.9.
The earthquake occurred at 5:30 p.m. local time and was estimated to have a maximum perceived intensity of X (''Extreme'') on the
Mercalli intensity scale
The Modified Mercalli intensity scale (MM, MMI, or MCS), developed from Giuseppe Mercalli's Mercalli intensity scale of 1902, is a seismic intensity scale used for measuring the intensity of shaking produced by an earthquake. It measures the eff ...
. The main shock
epicentre
The epicenter, epicentre () or epicentrum in seismology is the point on the Earth's surface directly above a hypocenter or focus, the point where an earthquake or an underground explosion originates.
Surface damage
Before the instrumental pe ...
is suggested to have occurred along the
Saint Lawrence River
The St. Lawrence River (french: Fleuve Saint-Laurent, ) is a large river in the middle latitudes of North America. Its headwaters begin flowing from Lake Ontario in a (roughly) northeasterly direction, into the Gulf of St. Lawrence, connectin ...
,
between the mouth of the
Malbaie River
The Malbaie River in the Charlevoix region empties into the Saint Lawrence River at La Malbaie. Until 1985 the river was used to transport logs downstream. It flows through a steep valley known as Les Hautes Gorges. A sugar maple and American el ...
on the north and the mouth of the
Ouelle River
The Ouelle River (''in French: rivière Ouelle'') is a tributary of the south shore of the St. Lawrence River, in the province of Quebec, in Canada. This river flows successively in the MRC of:
* L'Islet Regional County Municipality (administrativ ...
on the south. A large portion of eastern
North America
North America is a continent in the Northern Hemisphere and almost entirely within the Western Hemisphere. It is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the southeast by South America and the Car ...
felt the effects.
Landslides and underwater sediment slumps were a primary characteristic of the event with much of the destruction occurring near the epicentral region of the St. Lawrence estuary and also in the area of the
Saguenay Graben
The Saguenay Graben is a rift valley or graben in the geological Grenville Province of southern Quebec, Canada. It is an elongated flat-bottomed basin long and wide, bounded by normal faults running parallel to its length.
Formation of the Sa ...
.
The event occurred during the
early European settlement of North America and some of the best recorded first hand accounts were from Catholic missionaries that were working in the area. These records were scrutinized to help determine the scale of damage and estimate the magnitude of the quake in the absence of abundant records from that time period.
Tectonic setting
The
Charlevoix Seismic Zone The Charlevoix Seismic Zone is a seismically active area in the Charlevoix region of northeastern Quebec, Canada. It is also known as the Charlevoix-Kamouraska Seismic Zone because earthquakes occur in Kamouraska County where the land expression ...
(CSZ) lies along the St. Lawrence River, northeast of Quebec City. Although eastern Canada has relatively infrequent earthquakes, due to its location away from active plate boundaries, the CSZ is its most active part, with five earthquakes of estimated magnitude of 6 or greater since historical records began.
Focal mechanism
The focal mechanism of an earthquake describes the deformation in the source region that generates the seismic waves. In the case of a fault-related event it refers to the orientation of the fault plane that slipped and the slip vector and is ...
s for earthquakes in this zone are consistent with rupture on both
reverse faults and strike-slip faults of varied orientation. The main structures of the area are faults of the
Saint Lawrence rift system
The Saint Lawrence rift system is a seismically active zone paralleling the Saint Lawrence River. The rift system trends northeast and southwest and forms a half-graben that links the Ottawa-Bonnechere and the Saguenay grabens. The rift system e ...
that run parallel to the river, formed during the break-up of the
supercontinent
In geology, a supercontinent is the assembly of most or all of Earth's continent, continental blocks or cratons to form a single large landmass. However, some geologists use a different definition, "a grouping of formerly dispersed continents", ...
Rodinia
Rodinia (from the Russian родина, ''rodina'', meaning "motherland, birthplace") was a Mesoproterozoic and Neoproterozoic supercontinent that assembled 1.26–0.90 billion years ago and broke up 750–633 million years ago.
were probably ...
in the late
Neoproterozoic
The Neoproterozoic Era is the unit of geologic time from 1 billion to 538.8 million years ago.
It is the last era of the Precambrian Supereon and the Proterozoic Eon; it is subdivided into the Tonian, Cryogenian, and Ediacaran periods. It is ...
and early
Paleozoic
The Paleozoic (or Palaeozoic) Era is the earliest of three geologic eras of the Phanerozoic Eon.
The name ''Paleozoic'' ( ;) was coined by the British geologist Adam Sedgwick in 1838
by combining the Greek words ''palaiós'' (, "old") and ' ...
. The greatest seismicity occurs where the rift is overprinted by a ~300 Ma meteorite impact structure, the
Charlevoix impact structure
The Charlevoix impact structure is a large eroded meteorite impact structure in the Charlevoix region of Quebec, Canada. Only part of the impact structure is exposed at the surface, the rest lying beneath the Saint Lawrence River.
Description
...
. Most CSZ earthquakes have
hypocenter
In seismology, a hypocenter or hypocentre () is the point of origin of an earthquake or a subsurface nuclear explosion. A synonym is the focus of an earthquake.
Earthquakes
An earthquake's hypocenter is the position where the strain energy s ...
s within the
Grenvillian basement
A basement or cellar is one or more floors of a building that are completely or partly below the ground floor. It generally is used as a utility space for a building, where such items as the furnace, water heater, breaker panel or fuse box, ...
at depths between 7 and 15 km. Many of the smaller earthquakes do not appear to be located on the rift faults, but within the volumes of rock between them. Larger events lie outside the impact structure and have inferred nodal planes consistent with reactivation of the rift faults. The relatively weak impact structure is interpreted to cause a perturbation of the regional stress field, affecting the stability of the rift faults.
The estimated length of the most active portion of the CSZ was and the fault area was put at . By comparison, the 7 February
1812 New Madrid event, which was thought to have taken place on the Reelfoot fault and was the largest event in that series, had a rupture zone that was less than that of the Charlevoix earthquake and caused chimney damage at distances of more than .
These things together suggest that the Charlevoix earthquake was similar in size to the largest of the New Madrid earthquakes and was at least a magnitude 6.8 event. The estimation of the earthquake's intensity was based on the condition of the soil where the damage occurred. A lower magnitude range would be preferred if the soil in the area was soft and loosely compacted and a range based on firm ground or bedrock would be proportionately higher.
Effects
The earthquake was felt sharply in
New England
New England is a region comprising six states in the Northeastern United States: Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, and Vermont. It is bordered by the state of New York to the west and by the Canadian provinces ...
,
though the date recorded for the event was 26 January 1663, as New England was using the
Julian calendar
The Julian calendar, proposed by Roman consul Julius Caesar in 46 BC, was a reform of the Roman calendar. It took effect on , by edict. It was designed with the aid of Greek mathematicians and astronomers such as Sosigenes of Alexandr ...
at the time. A church record entry made by Reverend S. Danforth from
Roxbury, Massachusetts
Roxbury () is a Neighborhoods in Boston, neighborhood within the City of Boston, Massachusetts.
Roxbury is a Municipal annexation in the United States, dissolved municipality and one of 23 official neighborhoods of Boston used by the city for n ...
(~ 600 km from the CSZ) indicated the initial shock was felt around 6 pm that evening and several more shocks followed the next morning.
On the shores of
Massachusetts Bay
Massachusetts Bay is a bay on the Gulf of Maine that forms part of the central coastline of the Commonwealth of Massachusetts.
Description
The bay extends from Cape Ann on the north to Plymouth Harbor on the south, a distance of about . Its ...
, the tops of chimneys were broken on houses and
pewter
Pewter () is a malleable metal alloy consisting of tin (85–99%), antimony (approximately 5–10%), copper (2%), bismuth, and sometimes silver. Copper and antimony (and in antiquity lead) act as hardeners, but lead may be used in lower grades of ...
(a malleable metal alloy) was jarred from shelves.
This level of damage is consistent with a modified Mercalli intensity of VI though this may have been because the early colonials had the capability of producing only relatively weak mortar.
Using this MMI value and the distance from the epicenter one can estimate the magnitude of the earthquake using published intensity-attenuation relations. In a June 2011 report on the earthquake that was published in the ''Bulletin'' of the
Seismological Society of America
The Seismological Society of America (SSA) is an international scientific society devoted to the advancement of seismology and the understanding of earthquakes for the benefit of society. Founded in 1906, the society has members throughout the wor ...
, John E. Ebel, a professor and researcher at
Boston College
Boston College (BC) is a private Jesuit research university in Chestnut Hill, Massachusetts. Founded in 1863, the university has more than 9,300 full-time undergraduates and nearly 5,000 graduate students. Although Boston College is classifie ...
, used these known relations that apply to earthquakes in northeastern North America and determined the magnitude to be 7.3 – 7.9.
Great landslides along the Saint Lawrence, Saint-Maurice, and
Batiscan River
The Batiscan River is located in La Mauricie administrative region, in the Quebec province, Canada. This river flows from Lake Édouard in Mauricie south and west to empty into the St. Lawrence River at Batiscan, Quebec, northeast of Trois-Rivi ...
s made these rivers muddy after the shock, with the waters of the St. Lawrence being affected for up to one month.
Near
Trois-Rivières
Trois-Rivières (, – 'Three Rivers') is a city in the Mauricie administrative region of Quebec, Canada, at the confluence of the Saint-Maurice River, Saint-Maurice and Saint Lawrence River, Saint Lawrence rivers, on the north shore of the Sain ...
several waterfalls were transformed by these landslides,
and one waterfall on the St. Maurice River near Les Grès was said to have been nearly leveled.
At
Saint-Jean-Vianney, Quebec
Saint-Jean-Vianney was a village in the Saguenay-Lac-Saint-Jean region of Quebec, which was abandoned after it was partially destroyed in a landslide on May 4, 1971.
History
Saint-Jean-Vianney was originally created as a parish municipality in 1 ...
, there was a large earthflow landslide in a
sensitive clay, interpreted to have been caused by the 1663 earthquake. In 1971 this was the site of another much smaller earthflow that destroyed 41 houses and killed 31 people.
Multibeam bathymetry data and high resolution
seismic reflection
Reflection seismology (or seismic reflection) is a method of exploration geophysics that uses the principles of seismology to estimate the properties of the Earth's subsurface from reflected seismic waves. The method requires a controlled seismi ...
data acquired in the
Saguenay Fjord
Saguenay Fjord National Park (french: parc national du Fjord-du-Saguenay) is a provincial park located in Quebec, Canada. In the regions of Saguenay–Lac-Saint-Jean, Charlevoix, Côte-Nord, and Bas-Saint-Laurent, the park is situated along the ...
has been used to identify a series of landslide deposits that were probably triggered by the 1663 earthquake.
The Saguenay region is the site of a geological
graben
In geology, a graben () is a depressed block of the crust of a planet or moon, bordered by parallel normal faults.
Etymology
''Graben'' is a loan word from German, meaning 'ditch' or 'trench'. The word was first used in the geologic contex ...
and has been subject to several natural disasters since the turn of the seventeenth century. In 1996 it was the site of the
largest flood in 20th-century Canadian history, which led to the investigation of the fjord bottom using bathymetric data to determine slope stability.
Historical records
The inhabitants of the land were the
Algonquin
Algonquin or Algonquian—and the variation Algonki(a)n—may refer to:
Languages and peoples
*Algonquian languages, a large subfamily of Native American languages in a wide swath of eastern North America from Canada to Virginia
**Algonquin la ...
and
Iroquois
The Iroquois ( or ), officially the Haudenosaunee ( meaning "people of the longhouse"), are an Iroquoian-speaking confederacy of First Nations peoples in northeast North America/ Turtle Island. They were known during the colonial years to ...
people as well as several thousand French settlers. Religious groups like the
Ursulines
The Ursulines, also known as the Order of Saint Ursula (post-nominals: OSU), is an enclosed religious order of consecrated women that branched off from the Angelines, also known as the Company of Saint Ursula, in 1572. Like the Angelines, they t ...
(a Roman Catholic religious institute for women) and the Augustinians left good records of the event. These groups accredited the earthquake to God as a retaliation for disobedience and the sale of alcohol to Indigenous people. Some very detailed, though inconsistent, summaries were given by several Jesuits, most notably
Jérôme Lalemant
Jérôme Lalemant, S.J. (Paris, April 27, 1593 – Quebec City, January 26, 1673) was a French Jesuit priest who was a leader of the Jesuit mission in New France.
Life
Lalemant entered the Jesuit novitiate in Paris on 20 October 1610, after whi ...
who provided relatively reserved written accounts of the strong effects of the earthquake back to his superiors in Europe.
Lalemant was said to have been a disciplined priest with diverse experience and following his time in Canada was brought back to France to be posted the
provincial superior of the
Society of Jesus
, image = Ihs-logo.svg
, image_size = 175px
, caption = ChristogramOfficial seal of the Jesuits
, abbreviation = SJ
, nickname = Jesuits
, formation =
, founders ...
.
Father Charles Simon, on the other hand, was said to have limited training and some written records of his were not received as readily or without hesitation. Father Simon seemed to not be of the same mind as the bulk of the devoted, saying "...the Earthquake was rather a Scheme of Divine Mercy than a scourge of Justice,— especially since, in so great a confusion of affairs and perturbations of the elements, no one lost life or fortune. Fear came to all, penalty to none."
Aftermath
Immediately after the earthquake, the missionaries, once it had become clear that no lives had been lost, regarded the earthquake not only as a timely warning to the population of New France for their sinfulness, but also as a sign of God's protection. They described it as "miraculous" rather than a disaster, regarding the date of the earthquake as particularly important, coming on the last day of the carnival, just before
Mardi Gras
Mardi Gras (, ) refers to events of the Carnival celebration, beginning on or after the Christian feasts of the Epiphany (Three Kings Day) and culminating on the day before Ash Wednesday, which is known as Shrove Tuesday. is French for "Fat ...
. They were pleased to see all the colonists attending church regularly in the following days and that even the traffickers in wine and brandy appeared to repent. These effects were short-lived and Lalemant and other missionaries were soon left wishing for another great earthquake to help them in their cause.
See also
*
List of earthquakes in Canada
This is a list of earthquakes in Canada.
List
Abbreviations used:
See also
*Hydraulic fracturing in Canada
References
External links
*Natural Resources CanadEarthquakes Canada*Earthquakes CanadRecent earthquakes
{{DEFAULTSORT:Earthquake ...
*
List of earthquakes in the United States
The following is a list of notable earthquakes and tsunamis which had their epicenter in areas that are now part of the United States with the latter affecting areas of the United States. Those in ''italics'' were not part of the United States whe ...
*
List of historical earthquakes
Historical earthquakes is a list of significant earthquakes known to have occurred prior to the beginning of the 20th century. As the events listed here occurred before routine Seismometer, instrumental recordings, they rely mainly on the analys ...
References
;Bibliography
*
*
*
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1663 Charlevoix
1663 in science
1663 earthquakes
1663 in Canada
1663 in the Thirteen Colonies
1663 Charlevoix
1663 Charlevoix
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1663 Charlevoix
Landslides in Canada
Landslides in 1663