The Fry method applied to an augen orthogneiss: Problems and results

2007 ◽  
Vol 29 (2) ◽  
pp. 209-224 ◽  
Author(s):  
Florian Genier ◽  
Jean-Luc Epard
Keyword(s):  
Fry Method

Emplacement of the Miocene west Naxos pluton (Aegean Sea, Greece): a structural study

2003 ◽  
Vol 140 (1) ◽  
pp. 45-61 ◽  
Author(s):  
IOANNIS K. KOUKOUVELAS ◽  
SOTIRIOS KOKKALAS
Keyword(s):  
Aegean Sea ◽  
Biotite Granite ◽  
Distribution Analysis ◽  
Block Rotation ◽  
The South ◽  
Mafic Enclaves ◽  
The North ◽  
Divergent Flow ◽  
Regional Deformation ◽  
Fry Method

Synmagmatic and solid-state structures within the Naxos pluton and its rim may provide insight into the interplay between plutonism and regional deformation at upper-crustal level. Within the hornblende–biotite granite of western Naxos, synmagmatic foliations display two distinct patterns, onion-skin in the north and tangential to the rim in the south. The two areas are separated by the NE-trending Glinadon fault. Deformed mafic enclaves in the pluton are prolate, with their long axes parallel to the synmagmatic lineation. In contrast, phenocryst distribution analysis, using the Fry method, defines an apparent oblate strain with a horizontal stretching lineation. Planar markers within the pluton progressively steepen through the vertical at the east pluton border. Several lines of evidence, such as dykes intruding axial areas of rim-parallel folds, foliated or folded aplite veins, folds and spaced cleavage in the mollase, and inverted stratigraphy, suggest pluton emplacement and deformation during transpressional deformation. A northward divergent flow regime with magma spreading out mainly from the Naxos fault, and the deflection of both the synmagmatic foliation pattern and the flow lines at the Glinadon fault, suggest that the NE–SW- and N–S-trending faults were active during pluton formation. In the south the pluton has grown by the expansion of dykes occupying P-shear positions with respect with the Naxos fault; in the north a piecemeal block down-drop complements this process and favours voluminous magma concentration. During the late evolutionary stages of pluton construction, the magma chamber was compartmentalized into NE-trending sectors affected by block rotation in an anticlockwise manner. Understanding the role of faults in the emplacement of the Naxos pluton is important for understanding emplacement of other plutons in the Aegean Sea region, since most of them are controlled by N–S- (Ikaria pluton) or NE- (Tinos, Serifos and Delos plutons) trending faults.

ESTIMATION OF THE SHORTENING DEFORMATION VALUE IN TERRIGENOUS ROCKS USING NON-DIRECTIONAL RANDOM CROSS-SECTION METHOD (BELAYA RIVER, NORTHERN CAUCASUS)

2018 ◽  
pp. 13-22
Author(s):  
I. V. Latysheva ◽  
A. B. Kirmasov
Keyword(s):  
Cross Section ◽  
Middle Jurassic ◽  
Northern Caucasus ◽  
Axis Ratio ◽  
Section Method ◽  
Terrigenous Rocks ◽  
Northwestern Caucasus ◽  
Definition Of ◽  
Fry Method ◽  
Cross Section Method

The shortening deformation value was estimate in Lower and Middle Jurassic terrigenous rocks of the Northwestern Caucasus (Belaya River valley) using cleavage morphology. Numerical definition of deformational ellips’ axis ratio were obtained using Fry method «centre-to-centre» additionally. This paper shows that the deformational value may be quantitate correctly for random cross-section series of cleavage terrigenous rocks. The non directional random crosssection method described here can be used to quantify the shortening deformation of statistically significant sample series.

Refinements to the Fry method (1979) using image processing

1994 ◽  
Vol 16 (9) ◽  
pp. 1327-1330 ◽  
Author(s):  
Laurent Ailleres ◽  
Michel Champenois
Keyword(s):  
Image Processing ◽  
Fry Method

Use of image analysis in the measurement of finite strain by the normalized Fry Method: geological implications for the ‘Zone Houillère’ (Briançonnais zone, French Alps)

1995 ◽  
Vol 59 (395) ◽  
pp. 179-187 ◽  
Author(s):  
L. Ailleres ◽  
M. Champenois ◽  
J. Macaudiere ◽  
J.M. Bertrand
Keyword(s):  
Image Analysis ◽  
Finite Strain ◽  
Automated Image Analysis ◽  
French Alps ◽  
Strain Data ◽  
Image Analyser ◽  
Fry Method ◽  
Seismic Reflectors ◽  
Quartz Grains ◽  
Image Analysis Techniques

AbstractImage analysis techniques are used to quantify finite strain in microconglomerates from the ‘Zone Houillère’ (Briançonnais Zone, French Alps) using the normalized Fry method. Two different techniques have been developed to extract the necessary parameters from quartz grains: the first uses an interactive videographic image analyser linked to a digitizer, and the second uses a semi-automatic image analyser algorithm working on numeric images. Comparison between these two techniques allows the data provided by the latter to be validated. Semi-automated image analysis is then employed to compute the characteristics of the finite strain ellipse as defined by the normalized Fry method. This has been tested on natural and simulated fabrics and gives accurate results. Finally, these techniques have been applied to samples from the French Alps, in an attempt to correlate the regional pattern of finite strain with deep seismic reflectors. This paper presents the preliminary results using finite strain data determined by image analysis processing.

A computer program for the determination of finite strain using fry method

2010 ◽  
Vol 76 (2) ◽  
pp. 151-154 ◽  
Author(s):  
Prakash P. Roday ◽  
Manish K. Purohit ◽  
K. K. Prajapati
Keyword(s):  
Computer Program ◽  
Finite Strain ◽  
Fry Method

A statistical examination of the Fry method of strain analysis

2011 ◽  
Vol 33 (5) ◽  
pp. 1000-1009 ◽  
Author(s):  
Yehua Shan ◽  
Wenjiao Xiao
Keyword(s):  
Strain Analysis ◽  
Fry Method
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