File:Oxbow Projectile Point (FOUS 49993) (a7b517a2-1dd8-b71b-0b2e-105cabd14338).jpg
Original file (1,200 × 798 pixels, file size: 269 KB, MIME type: image/jpeg)
Captions
Summary
[edit]English: Oxbow Projectile Point (FOUS 49993) | |||||
---|---|---|---|---|---|
Photographer |
English: NPS photo |
||||
Title |
English: Oxbow Projectile Point (FOUS 49993) |
||||
Publisher |
English: U.S. National Park Service |
||||
Description |
English: Knife River flint oxbow projectile point. Knife River flint, quarried in North Dakota has been found across North America. Why? Because skilled arrowhead-makers could predict how the flint would fracture when struck or knapped. This Knife River flint oxbow point is a type commonly made and used between 7,800 BP and 1,500 BP.
|
||||
Depicted place |
English: Fort Union Trading Post National Historic Site |
||||
Date | Taken on 22 February 2017 | ||||
Accession number | |||||
Source |
English: NPGallery |
||||
Permission (Reusing this file) |
|
||||
NPS Unit Code InfoField | FOUS |
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 06:20, 14 May 2024 | 1,200 × 798 (269 KB) | BMacZeroBot (talk | contribs) | Batch upload (Commons:Batch uploading/NPGallery) |
You cannot overwrite this file.
File usage on Commons
The following page uses this file:
Metadata
This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.
Image title | Knife River flint, quarried in North Dakota has been found across North America. Why? Because skilled arrowhead-makers could predict how the flint would fracture when struck or knapped. This Knife River flint oxbow point is a type commonly made and used between 7,800 BP and 1,500 BP. |
---|---|
Camera manufacturer | Canon |
Camera model | Canon EOS DIGITAL REBEL XTi |
Exposure time | 1/125 sec (0.008) |
F-number | f/5 |
ISO speed rating | 400 |
Date and time of data generation | 17:12, 21 February 2017 |
Lens focal length | 50 mm |
Orientation | Normal |
File change date and time | 17:12, 21 February 2017 |
Y and C positioning | Co-sited |
Exposure Program | Not defined |
Exif version | 2.21 |
Date and time of digitizing | 17:12, 21 February 2017 |
Meaning of each component |
|
APEX shutter speed | 6.9657897949219 |
APEX aperture | 4.6438598632812 |
APEX exposure bias | 0 |
Metering mode | Pattern |
Flash | Flash did not fire, compulsory flash suppression |
DateTimeOriginal subseconds | 00 |
DateTimeDigitized subseconds | 00 |
Supported Flashpix version | 1 |
Color space | sRGB |
Focal plane X resolution | 4,433.2953249715 |
Focal plane Y resolution | 4,453.6082474227 |
Focal plane resolution unit | inches |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Scene capture type | Standard |