Diagenesis and provenance of the Middle Jurassic sandstones and carbonates of the Mohican Formation in Mic Mac H-86, Mohican I-100, and Wyandot E-53 wells, offshore Scotian Basin

1 online resource (x, 273 p.) : ill. (some col.), col. map.Includes abstract and appendices.Includes bibliographical references (p. 120-122).Diagenetic processes can be studied to determine the oil and gas reservoir potential within a sedimentary basin. The majority of focus within the Scotian Basin has been on Lower Cretaceous sandstones, with minimal studies done on the Middle Jurassic sandstones that appear in the Mohican Formation of the Scotian Basin. To increase potential oil and gas exploration in the future, it is important that other areas of the Scotian Basin be studied, such as the Middle Jurassic sandstones. To understand the diagenetic processes that occur in the Mohican Formation wells, petrographic data, lithofacies descriptions, X-Ray diffraction data, chemical mineralogy, and porosity and permeability data were combined and analyzed to determine reservoir potential in this part of the Scotian Basin. To determine provenance of these sandstones, petrographic data was used to observe minerals and textures of lithicclasts and compared to samples from known potential sources from elsewhere in the onshore area. Petrographic data shows that diagenesis in the Middle Jurassic Mohican Formation is similar to that of the Lower Cretaceous sandstones previously studied. However, main differences occur in the chemical mineralogy of minerals, particularly chlorite. Chlorite within studied wells contains high MgO wt% and low FeOtwt%, whereas in the Lower Cretaceous sandstones there is low MgO wt% and high FeOtwt%. This suggests that chlorite diagenesis is variable throughout the basin. Provenance studies show that most detrital minerals, within the studied samples, likely come from the Meguma Supergroup slates and meta-sandstones, and the Meguma Terrane granites, which also provide detrital minerals throughout other parts of the Scotian Basin, either as first or second cycle detritus

Resting-state hippocampal connectivity correlates with symptom severity in post-traumatic stress disorder

AbstractPost-traumatic stress disorder (PTSD) is a serious mental health injury which can manifest after experiencing a traumatic life event. The disorder is characterized by symptoms of re-experiencing, avoidance, emotional numbing and hyper-arousal. Whilst its aetiology and resultant symptomology are better understood, relatively little is known about the underlying cortical pathophysiology, and in particular whether changes in functional connectivity may be linked to the disorder. Here, we used non-invasive neuroimaging with magnetoencephalography to examine functional connectivity in a resting-state protocol in the combat-related PTSD group (n = 23), and a military control group (n = 21). We identify atypical long-range hyperconnectivity in the high-gamma-band resting-state networks in a combat-related PTSD population compared to soldiers who underwent comparable environmental exposure but did not develop PTSD. Using graph analysis, we demonstrate that apparent network connectivity of relevant brain regions is associated with cognitive-behavioural outcomes. We also show that left hippocampal connectivity in the PTSD group correlates with scores on the well-established PTSD Checklist (PCL). These findings indicate that atypical synchronous neural interactions may underlie the psychological symptoms of PTSD, whilst also having utility as a potential biomarker to aid in the diagnosis and monitoring of the disorder

[Photograph 2012.201.B1128.0265]

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Delia Rigal, who made her debut in Argentina, is Leonora.

[Photograph 2012.201.B1134.0464]

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Soprano Margaret Roggero as Annina.

[Photograph 2012.201.B0235.0316]

Photograph taken for a story in the Daily Oklahoman newspaper. Caption: "Eugene Conley as Turiddu in "Cavalleria Rusticana.

[Photograph 2012.201.B1128.0268]

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Above: Delia Rigal, soprano, who sings the role of Aida in the Metropolitan Opera presentation scheduled for the city May 14.

[Photograph 2012.201.B0993.0282]

Photograph used for a newspaper owned by the Oklahoma Publishing Company

[Photograph 2012.201.B0236.0050]

Photograph taken for a story in the Daily Oklahoman newspaper. Caption: "NADINE CONNER (soprano) as Mimi, the little Parisian seamstress in love with Rodolfo.

[Photograph 2012.201.B0993.0285]

Photograph used for a newspaper owned by the Oklahoma Publishing Company

[Photograph 2012.201.B0993.0279]

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "A scene from the Met's new, streamlined verssion of "Aida.