Parry Sound District, Ontario, Canadai

Regional Level Types
Parry Sound District	District
Ontario	Province
Canada	Country

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Parry Sound District has a rectangle shape that covers some 6978 square kilometers. The northern border runs east from the shore of Georgian Bay at the French river, then follows the French River into the south part of Lake Nipissing to about Callender Ontario where it turns south. From here it finds its way south, close to the border of Algonquin Park due west of Trout Creek Ontario. Continuing south it then runs parallel with the western boundary of Algonquin Park to a point where it meets the park border northwest of Kearney Ontario. From here it continues south to a point where it meets the northeastern border of the District of Muskoka at a point due east from Novar Ontario, just north of Tasso Lake, Highway 60, west of Huntsville Ontario. From here leading west it passes just below Novar Ontario which is also where you enter Ontario's Near North. Due west the southern district border continues west to a point approximately 9km north of Rosseau Ontario where it turns south again. Here it continues south into the north bay of Lake Rosseau where it divides it east and west. At a place on the opposite shore from Gull Rock in Lake Rosseau it turns west again and continues straight to the shore of Georgian Bay, west of Mactier and then Moon River Ontario.

Elevation of the district at the shore of Georgian Bay is about 177 meters above sea level and at it's east boundary with Algonquin Park it is just over 457 meters. About half the area of the district lies above 300 meters above sea level.

In recent quaternary geology, it is said that the district in its entirety was practically submerged by glacial Lake Algonquin which extended from the shores of Georgian Bay to about where Highway 11 leads north from Huntsville Ontario to Northbay Ontario. Major river systems flowing within the district are the French, Magnetawan, South, Sequin and the Pickerel. The Sequin and the Pickerel rivers are believed to follow pre-glacial joint fractures and are not related to any structure of the gneisses in which it cuts through.

The ground surface of the district is covered by almost countless lakes which are separated by rocky hills, some of which, reach 10's to 100's of meters in height. The tops of these hills are on a tilted plain rising east from the direction of Georgian Bay and show remnants of glacial debris. In the valleys and lowlands there are deposits of boulders, gravel, sand, silt and clay which were left upon retreat of the continental glacier.

The district is almost completely encompassed by the Central Gneiss Belt, except for a small area close to Lake Nipissing, the district is underlain by pre-Cambrian rocks that have features and characteristics of the geographical Grenville sub province of the pre-Cambrian shield.

The Central Gneiss Belt is one of two belts that make up the geological Grenville Province, having sedimentary and igneous rock ranging for 2.73 billion years old to 1.45 billion years old and establishes the Central Gneiss Belt being older than the Central Metasedimentary Belt which formed from sedimentary and volcanic rocks some 1.3 billion years ago to 1.25 billion years ago. Some of the youngest rocks found in the district are in the area of Parry Sound itself and are between 1.45 and 1.35 billion years old.

Commodity List

This is a list of exploitable or exploited mineral commodities recorded from this region.

Mineral List

Mineral list contains entries from the region specified including sub-localities

64 valid minerals. 2 (TL) - type locality of valid minerals.

Rock Types Recorded

Rock list contains entries from the region specified including sub-localities