Browns Field is located in Fox Valley , north-west from

Sydney Sydney ( ) is the capital city of the state of New South Wales, and the most populous city in both Australia and Oceania. Located on Australia's east coast, the metropolis surrounds Sydney Harbour and extends about towards the Blue Mountain ...

, in the state of

New South Wales ) , nickname = , image_map = New South Wales in Australia.svg , map_caption = Location of New South Wales in AustraliaCoordinates: , subdivision_type = Country , subdivision_name = Australia , established_title = Before federation , es ...

Australia Australia, officially the Commonwealth of Australia, is a Sovereign state, sovereign country comprising the mainland of the Australia (continent), Australian continent, the island of Tasmania, and numerous List of islands of Australia, sma ...

. It contains a small sporting ground and a bushland reserve. A unique

rainforest Rainforests are characterized by a closed and continuous tree canopy, moisture-dependent vegetation, the presence of epiphytes and lianas and the absence of wildfire. Rainforest can be classified as tropical rainforest or temperate rainfores ...

grows nearby, due to enriched soils from ancient volcanic activity.Field Guide to the Bushland of the Lane Cove Valley - John Martyn page 106

Geology

Browns Field is situated on a

maar A maar is a broad, low-relief volcanic crater caused by a phreatomagmatic eruption (an explosion which occurs when groundwater comes into contact with hot lava or magma). A maar characteristically fills with water to form a relatively shallow ...

diatreme A diatreme, sometimes known as a maar-diatreme volcano, is a volcanic pipe formed by a gaseous explosion. When magma Magma () is the molten or semi-molten natural material from which all igneous rocks are formed. Magma is found beneath the ...

. It was around 200 metres in diameter. The

mafic A mafic mineral or rock is a silicate mineral or igneous rock rich in magnesium and iron. Most mafic minerals are dark in color, and common rock-forming mafic minerals include olivine, pyroxene, amphibole, and biotite. Common mafic rocks include ...

soils are a typical dark colour. The diatreme occurred in the early

Jurassic The Jurassic ( ) is a Geological period, geologic period and System (stratigraphy), stratigraphic system that spanned from the end of the Triassic Period million years ago (Mya) to the beginning of the Cretaceous Period, approximately Mya. The J ...

, around 200 million years ago. The volcanic explosion erupted through the local

Hawkesbury sandstone Sydney sandstone is the common name for Sydney Basin Hawkesbury Sandstone, one variety of which is historically known as Yellowblock, and also as "yellow gold" a sedimentary rock named after the Hawkesbury River north of Sydney, where this ...

. Much of the rock formed by the diatreme is buried under soil cover, as well as landfill that helped create the sports oval at Browns Field. The soil is a mixture of organic material, and a

soil horizon A soil horizon is a layer parallel to the soil surface whose physical, chemical and biological characteristics differ from the layers above and beneath. Horizons are defined in many cases by obvious physical features, mainly colour and texture. ...

made up of weathered

regolith Regolith () is a blanket of unconsolidated, loose, heterogeneous superficial deposits covering solid rock. It includes dust, broken rocks, and other related materials and is present on Earth, the Moon, Mars, some asteroids, and other terrestria ...

particles. Rocky evidence of the diatreme is not obviously seen.

History

The local

indigenous Australian people Indigenous Australians or Australian First Nations are people with familial heritage from, and membership in, the ethnic groups that lived in Australia before British colonisation. They consist of two distinct groups: the Aboriginal peoples ...

, the

Kuringgai Kuringgai (also spelled Ku-ring-gai, Kuring-gai, Guringai, Kuriggai) (,) is an ethnonym referring to (a) an hypothesis regarding an aggregation of Indigenous Australian peoples occupying the territory between the southern borders of the Gamilar ...

occupied this area for thousands of years. The

emancipated Emancipation generally means to free a person from a previous restraint or legal disability. More broadly, it is also used for efforts to procure economic and social rights, political rights or equality, often for a specifically disenfranchis ...

convict A convict is "a person found guilty of a crime and sentenced by a court" or "a person serving a sentence in prison". Convicts are often also known as "prisoners" or "inmates" or by the slang term "con", while a common label for former convict ...

Thomas Hyndes settled the nearby area in 1822. In 1838, Governor Darling made a 259 hectare land grant to Hyndes. He worked the land with convict labour supplying timber to the colony of New South Wales. In 1854 the area was sold to John Brown, a merchant and timber getter. He also planted

orchard An orchard is an intentional plantation of trees or shrubs that is maintained for food production. Orchards comprise fruit- or nut-producing trees which are generally grown for commercial production. Orchards are also sometimes a feature of larg ...

s nearby. Locally known as 'Squire Brown', he owned of a square mile of land. At his peak, he employed one hundred pairs of pit-sawyers. These were used for various projects, including the supply of timber for the Pyrmont and

Glebe Island Bridge The Glebe Island Bridge is a heritage-listed disused swing Allan truss road bridge that carried Victoria Road (as Bank Street) across Rozelle Bay, located in the inner city Sydney suburb of Pyrmont in the City of Sydney local government ar ...

s. The area currently used as a sporting field was once indigenous forest, and later, a

rubbish tip A landfill site, also known as a tip, dump, rubbish dump, garbage dump, or dumping ground, is a site for the disposal of waste materials. Landfill is the oldest and most common form of waste disposal, although the systematic burial of the wast ...

Recreation

The oval is used for various activities such as

football Football is a family of team sports that involve, to varying degrees, kicking a ball to score a goal. Unqualified, the word ''football'' normally means the form of football that is the most popular where the word is used. Sports commonly c ...

and

cricket Cricket is a bat-and-ball game played between two teams of eleven players on a field at the centre of which is a pitch with a wicket at each end, each comprising two bails balanced on three stumps. The batting side scores runs by striki ...

. A

bushwalking Hiking is a long, vigorous walk, usually on trails or footpaths in the countryside. Walking for pleasure developed in Europe during the eighteenth century.AMATO, JOSEPH A. "Mind over Foot: Romantic Walking and Rambling." In ''On Foot: A Histor ...

track starts near the field.

Flora

Many

plants unusual to the Sydney area are present. Such as golden sassafras, jackwood, wild quince, giant maidenhair, fishbone water fern, strap water fern, and the sub tropical rainforest tree, the

koda KODA (99.1 FM, "Sunny 99.1") is an American commercial adult contemporary-formatted radio station in Houston, Texas. The station is owned by iHeartMedia. Its studios and offices are located along the West Loop Freeway in Uptown Houston. KODA ...

Ku-ring-gai Council Ku-ring-gai Council is a local government area in Northern Sydney ( Upper North Shore), in the state of New South Wales, Australia. The area is named after the Guringai Aboriginal people who were thought to be the traditional owners of the area. ...

Bushland Technical Officer, Peter Lockhart via Peter Woodard A population of the critically endangered

scrub turpentine Scrub turpentine is a common name for several plants and may refer to: *''Canarium australianum'', native to Australia and Papua New Guinea *'' Rhodamnia rubescens'', native to eastern Australia See also * Turpentine bush * Turpentine tree Turpent ...

persists at Browns Field.

- information sign The paucity of

fire Fire is the rapid oxidation of a material (the fuel) in the exothermic chemical process of combustion, releasing heat, light, and various reaction Product (chemistry), products. At a certain point in the combustion reaction, called the ignition ...

, dark volcanic soils and high rainfall, contribute to rainforest vegetation. The average annual rainfall is at the nearby Kissing Point Road weather station.

Fauna

Ring-tail possums,

brushtail possum The brushtail possums are the members of the genus ''Trichosurus'' in the Phalangeridae, a family of marsupials. They are native to Australia (including Tasmania) and some small nearby islands. Unique among marsupials, they have shifted the hypax ...

s and

grey-headed flying fox The grey-headed flying fox (''Pteropus poliocephalus'') is a megabat native to Australia. The species shares mainland Australia with three other members of the genus ''Pteropus'': the little red ''Pteropus scapulatus, P. scapulatus'', spectacle ...

es are common. Many bird species live nearby, such as

rainbow lorikeet The rainbow lorikeet (''Trichoglossus moluccanus'') is a species of parrot found in Australia. It is common along the eastern seaboard, from northern Queensland to South Australia. Its habitat is rainforest, coastal bush and woodland areas. Six ...

Australian king parrot The Australian king parrot (''Alisterus scapularis'') is a species of parrot endemic to eastern Australia ranging from Cooktown in Queensland to Port Campbell in Victoria. Found in humid and heavily forested upland regions of the eastern portion ...

crimson rosella The crimson rosella (''Platycercus elegans'') is a parrot native to eastern and south eastern Australia which has been introduced to New Zealand and Norfolk Island. It is commonly found in, but not restricted to, mountain forests and gardens. The ...

currawong Currawongs are three species of medium-sized passerine birds belonging to the genus ''Strepera'' in the family Artamidae native to Australia. These are the grey currawong (''Strepera versicolor''), pied currawong (''S. graculina''), and black ...

koel The true koels, ''Eudynamys'', are a genus of cuckoos from Asia, Australia and the Pacific. They are large sexually dimorphic cuckoos that eat fruits and insects and have loud distinctive calls. They are brood parasites, laying their eggs in ...

and the

tawny frogmouth The tawny frogmouth (''Podargus strigoides'') is a species of frogmouth native to the Australian mainland and Tasmania and found throughout. It is a big-headed, stocky bird, often mistaken for an owl, due to its nocturnal habits and similar colour ...

. The

powerful owl The powerful owl (''Ninox strenua''), a species of owl native to south-eastern and eastern Australia, is the largest owl on the continent. It is found in coastal areas and in the Great Dividing Range, rarely more than inland. The IUCNRed List ...

is known to nest in the reserve. A population of the iridescent semi-slug occurs in the rainforest.Michael Shea,

Australian Museum The Australian Museum is a heritage-listed museum at 1 William Street, Sydney central business district, New South Wales, Australia. It is the oldest museum in Australia,Design 5, 2016, p.1 and the fifth oldest natural history museum in the ...

Bush regeneration

Forest conservation work is in progress. The weeds

trad Trad. is often an abbreviation of the word "traditional". It may also refer to: Music *Trad jazz, a style of jazz music in the 1950s and 1960s *Néo-trad, a musical style that arose in Quebec around the turn of the 21st century *Irish traditional m ...

and

privet A privet is a flowering plant in the genus ''Ligustrum''. The genus contains about 50 species of erect, deciduous or evergreen shrubs, sometimes forming small or medium-sized trees, native species, native to Europe, north Africa, Asia, many in ...

being particularly troublesome.

References

{{Reflist Parks in New South Wales Forests of New South Wales Geography of Sydney Geology of New South Wales Diatremes of Australia