- Gildersleeve Mountain
name of this feature [Gnis|1052943|Gildersleeve Mountain] .
Gildersleeve Mountain is interesting and important because it is within one of the largest and most densely populated metropolitan areas in the United States (regional population 2.9 million). It is a relatively unspoiled and unique area just convert|18|mi|km from downtown Cleveland. While this is not unique in a region where urban and suburban forest preserves abound, it is one of only two natural areas with higher elevations and unique rock outcroppings. Little Mountain, which is part of the
Holden Arboretum, is similar to Gildersleeve Mountain but is accessible on guided walks only.
The summit of Gildersleeve Mountain is convert|1163|ft|m above sea level. convert|593|ft|m above
Lake Erie. The shoreline of Lake Erie is approximately convert|6.7|mi|km north west of the summit.
Gildersleeve Mountain marks the beginning of the
Allegheny Plateauin the area. Its northern slopes transition down the Portage escarpment to lake plain. The southern side of the feature has a much less dramatic transition, falling only convert|150|ft|m to the surrounding highlands.
Gildersleeve Mountain is one of the more obvious geographic features of the Cleveland region. It is visible when the view is unobstructed by buildings or trees from downtown Cleveland, Mayfield Heights, and from the shore and waters of Lake Erie. It is obvious when looking to the south or east from any tall building near the lake shore in western Lake or eastern Cuyahoga Counties.
Gildersleeve Mountain also offers spectacular views of Lake Erie from locations near the summit. From one location the view to the west and southwest affords a view of the downtown Cleveland skyline, convert|18|mi|km away., or Permian , nuclear power stations may be visible far to the west.
Ontario, convert|54|mi|km away, is the closest point on the Canadian shore of Lake Erie. However, the distance to the horizon at the lookout is only convert|28.7|mi|km, so while the Canadian waters of Lake Erie are visible from Gildersleeve Mountain, the Canadian shore is not. On clear nights, lights are visible on the horizon to the northwest but it is uncertain if these are on the Canadian shore.
The views to the north and east were once very good with most of the landscape of Kirtland and the lakeshore of Lake County visible. Features from Perry to Willoughby were visible, but the view has not been maintained as trees that were once managed have been allowed to obstruct the view.
About 60% of Gildersleeve Mountain is within the convert|370|acre|km2|sing=on [http://lakemetroparks.com/select-park/chapin.shtml Chapin Forest Reservation] , which was acquired by the state of Ohio in 1949 and has been managed by the Lake County Metropolitan Park District since 1966. It is managed as a recreational facility for the public and features picnic areas, sports facilities, and playgrounds, although none of these are located on the higher elevations. Trails that may be used for hiking, bicycling, horseback riding, and cross country skiing in winter cross the public lands and circle the summit.
Over 50 private residences are on the slopes of Gildersleeve Mountain. An active
natural gaswell was drilled in 2006, and the forested areas are logged for hardwood maple and oak. Commercial maple syrupproduction was once done using the native Sugar Maple stands for sap, but this activity is no longer viable. Gildersleeve Mountain was once an important source of sandstone for building and for sand and gravel. Commercial exploitation of these resources ceased in 1968.
As the map to the right shows, the topography of Gildersleeve Mountain had been changed significantly by human activity. The sand and gravel quarry on the west side was active for more than 100 years before shutting down in 1968 and being acquired by the state of Ohio. The road and some trails have been used for the same period of time, but others were put in by the state of Ohio after it acquired the property in 1949, and still others have been added or re-routed by Lake Metroparks. [http://www.lakemetroparks.com/select-park/chapin.shtml]
Clearcut and selective logging has also changed the land features. The most recent logging was a selective cut of about 40 acres on the east side in the spring of 2006.
Development, although not shown on the map, also changed the topography. Some of the cleared areas and some of the forested areas are subdivided and have light duty roads with private homes. This is mostly on the southeast side of Gildersleeve Mountain. In 2007 the former quarry access area and orchard on the west side will be developed into home sites.
Another feature of interest is a cabin foundation on the northern end of the summit. There was a chimney associated with this foundation until it was blown down during the
Ohio Fireworks Derechothat struck the Cleveland region on July 4, 1969. This storm also toppled several hundred trees on Gildersleeve Mountain. The foundation is now in an overgrown area of what used to be the Panorama Point picnic area. Although signage still calls out this area, the panoramic view from this location is no longer viable because trees have been allowed to grow and obscure the view.
Also of interest are the remnants of a cistern at the base of an outcropping to the west of the cabin foundation. These may be found by following the base of the rock outcroppings to the west of the Panorama Point area. The water caught by this cistern is filtered though the Sharon conglomerate and seeps out of the base of the outcropping.
There are numerous seeps all around Gildersleeve Mountain, and they are the source of the creeks that run off into the
Chagrin Riverwatershed. These creeks are augmented by rain and snow melt. They create ravine systems that cut though layers of rock and provide interesting places to study local geology. The Quarry Creek ravine accessible from the Old South Church property cuts down to the Cleveland shale layer before crossing Eagle road.
Around 380 to 300 million years ago the area was on the Earth’s equator as a part of the
Pangaeasuper continent. With the uplifting of the continental plate, the area went from continental shelf to shallow sea. The geology of the area reflects this transition.
The lowest visible bedrock is Chagrin shale. Named for the
Chagrin Riverand easily found in the river valley, Chagrin shale is blue gray in color, an offshore alluvial, silt shale of the Devonianperiod. This layer is found below about convert|800|ft|m msl and is found when drilling wells on the slopes of Gildersleeve Mountain.
The next layer is Cleveland shale. This is a black shale that is an important source of local fossils. Again Cleveland shale is not visible on Gildersleeve Mountain but can easily be found in the nearby Chagrin River valley between 800 and convert|900|ft|m msl.
Bedford shale is found above the Cleveland Shale layer. This material marks the uncertain transition between the Devonian and
Pennsylvanianperiods in the region. This layer is found in the ravines that run off the slopes of Gildersleeve Mountain. Bedford shale is a sand shale and is characterized by its roughly 90° cleavage pattern. Pieces of Bedford shale can look as if they were cut by human hands and are found up to about convert|950|ft|m msl.
A thin strata of Sunbury shale is often found above the Bedford Shale. This is a thin layered, black shale, of more silty origins, possibly from a period when the waters running into the ocean basin were running slower, creating finer particles.
sandstoneis found from around convert|950|ft|m msl to roughly convert|1070|ft|m msl. However, at this point it should be mentioned that the rock structure around Gildersleeve Mountain is by no means uniform. Millions of years of glaciation and resulting erosion and fill have resulted in many ravines that have been subsequently filled with glacial till and alluvial clays. Still, Berea sandstone is found in outcroppings and in other areas on Gildersleeve Mountain. In the nineteenth century it was quarried from what is now Quarry Pond, near Chillicothe Road. This material was used to build Kirtland Templeand other local structures. Berea sandstone is still used as a local building material.
Sharon conglomerate is found beginning around convert|1070|ft|m msl. It is the predominant outcropping on Gildersleeve Mountain. Sharon Conglomerate is a sandstone imbedded with white
quartzpebbles. It is hypothesized this rock was created by fast-running streams, running down ancient mountains. Faster-running water carried larger pebbles along with the sand, and this was deposited very near shore, or in river or stream deltas and estuaries. It is Sharon conglomerate outcroppings that up make most of the spectacular ledges that are found on the southeast, north, and western sides of Gildersleeve Mountain. The ledges have been split and eroded to create up to three distinct sets of formations separated by deeper crevasses. In some areas there are vertical faces of over convert|30|ft|m with very steep slopes at the base. In these areas the elevation change is dramatic, going from convert|1060|ft|m to convert|1130|ft|m in under convert|150|ft|m of horizontal distance.
Above convert|1150|ft|m, a thin layer of the hard sandstone Shalersville formation may be found. Only 5 to convert|10|ft|m thick it is found only on the summit of Gildersleeve mountain.
As mentioned earlier, glaciation has played an important part in the geology of Gildersleeve Mountain. During the
Wisconsin glaciation, ice sheets more than a mile thick covered the region. Glaciers are the major erosive force in the region and ground down the higher elevations while scooping out the [Great Lakes] . The hard Sharon conglomerate is more resistant to this grinding action.
Glacial ice is not the only erosive force to act upon Gildersleeve Mountain. Glacial melt released huge amounts of water that flooded the landscape. This water cut ravines and filled others with clay and rocky debris.
The Gildersleeve Mountain we see today is the result of hundreds of millions of years of erosion. The sedimentary rocks were created by ancient erosion of the land, and the worn-down relic of a higher peak is also the result of erosion.
Prior to European settlement the area was a vast northern hardwood forest. On Gildersleeve mountain this probably consisted of 3 types of forest. Beech Maple forest, Hemock hardwood forest, and Oak Hickory forest. as reminant stands of all three types remain. Old growth Oak and Maple can be found in a few locations where they were not claimed by 19th century logging. In second growth areas mixed mesophytic forest is predominant and generally these trees are about 100 to 150 years old.
The Hemlock hardwood forest is one of the most unusual and interesting, but not uncommon on the Allegheny Plateau in the region. The Chestnut Oak is an interesting species found on the summit.
Herbacious species are numerous. The most interesting are found in the crevasses and cooler areas in the ledge system. Wild flower species are typical of the area. the brilliant red, Cardinal flower, is found near creeks. Red and white trilium are found where deer have not browsed. Cress, foam flowers, blue cohosh, and occasionally orchids are found. A wide variety of ferns can be found. A rare species of grass may be found in the ledges. Unfortunately deer browse has seriously reduced the abundance of herbacious species. The outcroppings have additional interest because club mosses and lichens can be found on their surfaces.
Interesting fungi are present, but these disappear quicky given the fact that Gildersleeve mountain is within a major American metropolitan area.
Many interesting species of animal are found on Gildersleeve mountain. Unusual dragonflies include Comet Darner, Shadow Darner and Twin spotted Spiketail. Crayfish are found in the creeks. Fish species are not found in the shallow fast running creeks at these elevations but blue gills and largemouth bass can be found in the ponds.
Interesting reptiles and amphibians are found here as well. Vernal pools hold salamanders and the Red Eft phase of the Eastern Newt. is found on the on the forest floor of the steeper slopes. Black rat snakes, and Garter snakes are common. One of Kirtland’s first settlers, Christopher Crary, recalled rattlesnakes in the 1820s or 30s in his memoir: "On Gildersleeve mountain twenty three were killed in one day, and they soon became extinct." [http://ftp.rootsweb.com/pub/usgenweb/oh/newspapers/tidbits/tbs52a.txt] . These were probably Eastern timber rattlesnake. American Toads are found along with, Spring peepers and Gray tree frogs. Pickerel frogs are found in the creeks. Green frogs are found in the vernal pools and other water. Bullfrogs are found in the ponds on the northwestern slope
Many species of birds can be found on Gildersleeve mountain.
Barred Owls are common year round residents and can be found by listening and watching carefully. They will often sit close to the trials in clear view but hidden in the shadows of the branches. Most visitors are oblivious to their presence. Cooper’s Hawks, Red-shouldered Hawks, Broad-winged Hawks and Red-tailed Hawks also nest on the slopes. Wild Turkey nests here. The spectacular, Pileated Woodpecker, as well as Hairy, Downey, and Red-bellied woodpeckers are common year round. Great Creasted Flycatcher, Eastern Phoebe, Eastern Wood Pewee and Acadian Flycatcher are common nesters. Eastern Bluebirdis common in the more open areas, Wood Thrush is found nesting wherever trees create a canopy overhead. Black-capped Chickadees, Tufted Titmice, White-breasted Nuthatch are common residents and Red -breasted nuthatch is sometimes found. Red-eyed Vireos are common tree top nesters. Hooded Warbler and American Redstart are common nesters in the forest under story. Ovenbird, nests on the forest floor and Louisiana Waterthrushnest is the ravines and creek beds. Eastern Towhee is found in the underbrush. Scarlet Tanager, Rose-breasted Grosbeak, American Goldfinch, House Finch, and Song Sparrow are also common nesters
, is a prolific nester and abundant year round on Gildersleeve mountain, not just in the winter, as in most of the Cleveland region.
Interesting and very rare migrant species have been found on or seen from Gildersleeve mountain.
Tundra Swans are expected in fall as they fly over on their way south. Northern Harrier, has been seen in the spring. Most Spectacular have been Western Kingbird(fall 2005) and Kirtland’s Warbler(fall 2004). Uncommon winter visitors have included Pine Siskins, Common Redpoll, and Evening Grosbeak.
Mammals found on Gildersleeve mountain include the usual and the unexpected. Opossum, various shrews, moles, and several species of bats. Mice and voles are common with White footed deer mouse being the most abundant. Red, Gray (both gray and black morphs) and Eastern Fox Squirrel are common and southern Flying Squirrel is occasionally found. Eastern Chipmunks are abundant. Raccoons are common. Three weasels, least, short tailed and long tailed have all been found. Striped skunk is less common than in more sub urban residential areas. White tailed deer are common. Red fox have declined as Coyote have increased in numbers. Evidence of Bobcat has been found but confirmation of this species will require a specimen. In June 2004, a black bear made yet another contemporary appearance on Gildersleeve mountain. This time leaving tracks, tearing up a trash receptical, and silencing the skeptics.
Gildersleeve Mountain is named for the original land owner S.A. Gildersleeve.
* Prusha, Anne B., A History of Kirtland, Ohio. 1983, Lakeland Community College Press.
* Rosche, Larry (editor), Birds of the Cleveland Region. 2005, Cleveland Museum of Natural History
* Crary, Christopher, Memoir of Early Years of Settlement in Kirtland, 1893, [http://ftp.rootsweb.com/pub/usgenweb/oh/newspapers/tidbits/tbs52a.txt]
* Szubski, Rosemary N. (editor), A Natural History of Lake County, Ohio. 2nd Edition 2002, Cleveland Museum of Natural History
* Foos, Annabelle M. (editor), Pennsylvanian Sharon Formation Past and Present...2003, Ohio Division of Geological Survey
* Banks, P.O., Feldmann, Rodney M.(editors), Guide to the Geology of Northeastern Ohio. 1970 Northern Ohio Geological Society
* Camp, Mark J., Roadside Geology of Ohio. 2006, Mountain Press Publishing Company.
* Quarries of Chapin Forest [http://lakemetroparks.com/news/publications/documents/A_Legacy_Carved_in_Stone_NS_Summer07.pdf]
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