scholarly journals Structural Elements and Neotectonics of Prince Edward County, Southern Ontario

2007 ◽  
Vol 47 (3) ◽  
pp. 303-312 ◽  
Author(s):  
Gail H. McFall
Keyword(s):  
New York ◽  
New York State ◽  
Lake Ontario ◽  
Structural Features ◽  
Structural Elements ◽  
Southern Ontario ◽  
York State ◽  
Salmon River ◽  
Middle Ordovician ◽  
Prince Edward County

ABSTRACT The seismically active Clarendon-Linden Fault of western New York State appears to connect with the Salmon River Fault and possibly with the Picton Fault, both of which cut through Prince Edward County, southern Ontario. Bedrock exposures display a variety of structural features including faults, fractures, and pop-ups which indicate that the region has been subjected to repeated tectonism since the Middle Ordovician. Thus, despite the general perception that Prince Edward County and the rest of the Lake Ontario region is one of low seismic potential, geological and geophysical data suggest otherwise.

The salivary gland chromosomes of Prosimulium multidentatum Twinn and three forms included in Prosimulium magnum (Dyar and Shannon) (Diptera:Simuliidae)

1969 ◽  
Vol 47 (5) ◽  
pp. 943-949 ◽  
Author(s):  
P. O. Ottonen ◽  
Ramachandran Nambiar
Keyword(s):  
New York ◽  
Salivary Gland ◽  
Great Lakes ◽  
Sex Chromosomes ◽  
Species Complex ◽  
New York State ◽  
Great Lakes Region ◽  
Southern Ontario ◽  
York State ◽  
The Third

Further study of the morphology of salivary gland chromosome complements within the range described for Prosimulium magnum showed the species to consist of three cytologically distinct populations. The first two forms are without sex chromosomes, (1) a form analogous to the species chromosomal standard, P. magnum, (2) a form which is differentiated by the fixed inversion IIS-25, but (3) the third form has cytological XcYc sex determination. In the Great Lakes region these three forms of the P. magnum complex and P. multidentatum are sympatric in three separate areas, Michigan, Southern Ontario, and Western New York State. Natural hybrids between the forms have so far been obtained only infrequently, and the known hybrids are described. Some chromosomal aspects of speciation are discussed in relation to the present observations on the species complex.

Supernormal fluid pressures in sedimentary rocks of southern Ontario – western New York State

1992 ◽  
Vol 29 (1) ◽  
pp. 80-93 ◽  
Author(s):  
K. G. Raven ◽  
K. S. Novakowski ◽  
R. M. Yager ◽  
R. J. Heystee
Keyword(s):  
New York ◽  
Sedimentary Rock ◽  
New York State ◽  
Sedimentary Rocks ◽  
Fluid Pressure ◽  
Gas Migration ◽  
Southern Ontario ◽  
York State ◽  
Monitoring Wells ◽  
Pressure Transducers

Fluid pressures up to 1.7 times greater than hydrostatic have been measured in argillaceous Paleozoic rocks of low permeability in southern Ontario and western New York State. These supernormal formation fluid pressures were measured at depths of 50–310 m using submersible pressure transducers with straddle packers and multiple-packer casings isolating the test intervals. Measurements were obtained over periods of 7–46 months following casing installations. The pressure measurements from 11 monitoring wells are compiled and supporting hydrogeologic data for 5 selected wells are used as examples to illustrate the occurrence of supernormal fluid pressures in the Ordovician, Silurian, and Devonian sedimentary sequence of southern Ontario and western New York State. Possible explanations for the occurrence of supernormal fluid pressures in sedimentary rock are evaluated considering the available geologic and hydrogeologic information obtained from the monitoring wells. Based on this review, it is hypothesized that gas migration and accumulation from deeper distant sources via permeable vertical pathways is the most plausible explanation for the observed fluid pressures, although secondary contributions from local neotectonic activity are also possible. The implications of such supernormal fluid pressures on regional groundwater flow in sedimentary rocks and related activities such as waste disposal in sedimentary rock are briefly discussed. Key words : supernormal fluid pressure, sedimentary rocks, gas migration.

K-Bentonites and Graptolite Biostratigraphy in the Middle Ordovician of New York State and Quebec: A New Chronostratigraphic Model

Palaios ◽  
1994 ◽  
Vol 9 (2) ◽  
pp. 124 ◽  
Author(s):  
Daniel Goldman ◽  
Charles E. Mitchell ◽  
Stig M. Bergstrom ◽  
John W. Delano ◽  
Steven Tice
Keyword(s):  
New York ◽  
New York State ◽  
York State ◽  
Middle Ordovician

scholarly journals Consumption of Lake Ontario sport fish and the incidence of colorectal cancer in the New York State Angler Cohort Study (NYSACS)

2017 ◽  
Vol 154 ◽  
pp. 86-92 ◽  
Author(s):  
Catherine L. Callahan ◽  
John E. Vena ◽  
Joseph Green ◽  
Mya Swanson ◽  
Lina Mu ◽  
...  
Keyword(s):  
Colorectal Cancer ◽  
New York ◽  
Cohort Study ◽  
New York State ◽  
Lake Ontario ◽  
York State ◽  
Sport Fish
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