Abstract Thursday: Black & White with a Dash or 2

As I walked past Killingworth Lake on my way to the Leisure Centre for a swim this morning, I noticed nice patterns on the water surface which were highlighted by the way the sun was shining on it. "Aha, it's Abstract Thursday!" I thought - so out came my phone camera.

Then I realised that youoregon1 (who kindly and valiantly hosts this challenge) had suggested the theme "Black and White, with a Dash or Two". So what you see here is my photo, suitably molested in Lightroom and Photoshop to fit the theme.